CHANGELOG.md

Security Fix

• Applied security fixes to: fix_cycle.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/src/agentic_security/fix_cycle.py: Added:

• path = Path(f).resolve(strict=True) # strict=True ensures all parts exist...
• try:...
• path.relative_to(base_dir)...
• except ValueError:...
• preexec_fn=os.setsid, # Ensure process group isolation...
• umask=0o077 # Restrictive file creation mask...

• Validate temp file location...

• if not temp_path.parent.samefile(changelog_path.parent):...
• raise ValueError("Temporary file must be in same directory as changelog")...

• Verify content was written correctly...

• with open(temp_path, 'r') as f:...
• if f.read() != safe_entry:...

• Set final permissions before atomic rename...

• os.chmod(temp_path, 0o644)...

Modified:

• Changed: raise ValueError(f"File not found: {f}") → raise ValueError("File content verification failed")
• Changed: start_new_session=True # Isolate the process group → start_new_session=True, # Isolate the process group
• Changed: fd = os.open(temp_path, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o644) → fd = os.open(temp_path, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o600)

Removed:

• path = Path(f).resolve()
• if not str(path).startswith(str(base_dir)):
• if not path.exists():

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/test_features.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/test_features.py:Failed to generate diff summary: list index out of range

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/app.py, /workspaces/agentic-security/tests/samples/auth.py, /workspaces/agentic-security/tests/samples/api.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/api.py: Added:

• r'<!ENTITY',...
• r'<!DOCTYPE',...
• r'<!ELEMENT',...
• r'<!ATTLIST',...
• r'<?xml-stylesheet',...
• r'data:',...
• r'file:',...
• r'gopher:',...
• r'http:',...
• r'ftp:'...
• ]...
• if not isinstance(response_data, str):...
• parse_float=decimal.Decimal, # Use Decimal for precise floating point...
• parse_constant=lambda x: ValueError(f'Invalid constant {x}') # Reject inf/nan...
• if not isinstance(parsed_data, (dict, list)):...
• New import: from typing import Union, Dict, List, Any

• Whitelist of allowed commands...

• ALLOWED_COMMANDS = {'ls', 'dir', 'echo', 'pwd'}...

• Safely split command...

• Validate base command...

• base_cmd = cmd_args[0].lower()...
• if base_cmd not in ALLOWED_COMMANDS:...
• for arg in cmd_args[1:]:...
• if arg.startswith('-'):...
• if any(c in arg for c in ';&|$()`'):...

• Execute with restricted permissions...

• cmd_args,...
• text=True,...
• shell=False, # Prevent shell injection...
• timeout=10, # Prevent hanging...
• check=True # Raise on non-zero exit...

Modified:

• Changed: """Secure XML parsing with XXE protection""" → """Secure XML parsing with XXE protection and strict validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure response handling with validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure command execution with strict validation"""
• Changed: # Additional input validation → # Comprehensive input validation
• Changed: # Additional input validation → # Additional argument validation
• Changed: # Reject XML strings with potential malicious patterns → """Secure XML parsing with XXE protection and strict validation"""
• Changed: # Reject XML strings with potential malicious patterns → raise ValueError(f"Invalid XML string: Potentially malicious content detected: {pattern}")
• Changed: malicious_patterns = [r'<!ENTITY', r'<!DOCTYPE'] → malicious_patterns = [
• Changed: raise ValueError("Invalid XML string: Potential XXE attack detected") → raise ValueError(f"Invalid XML string: Potentially malicious content detected: {pattern}")
• Changed: raise ValueError("Invalid XML string: Potential XXE attack detected") → raise ValueError(f"Invalid character in argument: {arg}")
• Changed: # Handle invalid input with proper error logging → logging.error("Invalid input type for XML parsing")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid input type for XML parsing")
• Changed: logging.error(f"Error: {e}") → logging.error(f"XML Validation Error: {str(e)}")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid response data type")
• Changed: logging.error(f"Error: {e}") → logging.error(f"JSON Processing Error: {str(e)}")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid command type")
• Changed: logging.error(f"Error: {e}") → logging.error(f"Command Execution Error: {str(e)}")
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
• Changed: """Secure response handling""" → """Secure response handling with validation"""
• Changed: return json.loads(response_data) → parsed_data = json.loads(
• Changed: return json.loads(response_data) → response_data,
• Changed: return json.loads(response_data) → return parsed_data
• Changed: except json.JSONDecodeError: → except (json.JSONDecodeError, ValueError) as e:
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: def parse_xml(xml_string): → if not isinstance(xml_string, str):
• Changed: # Secure XML parsing → # Set strict parsing options
• Changed: return ET.fromstring(xml_string, parser=parser) → if not isinstance(xml_string, str):
• Changed: import requests → import json
• Changed: import requests → import decimal
• Changed: import requests → import subprocess
• Changed: import requests → import shlex
• Changed: import requests → import re
• Changed: import subprocess → import json
• Changed: import subprocess → import decimal
• Changed: import subprocess → import logging
• Changed: import subprocess → import subprocess
• Changed: import subprocess → import shlex
• Changed: import subprocess → import re
• Changed: import subprocess → result = subprocess.run(
• Changed: import subprocess → stdout=subprocess.PIPE,
• Changed: import subprocess → stderr=subprocess.PIPE,
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• Changed: def parse_xml(xml_string): → if not isinstance(xml_string, str):
• Changed: """Secure XML parsing with XXE protection""" → """Secure XML parsing with XXE protection and strict validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure response handling with validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure command execution with strict validation"""
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• Changed: # Validate and sanitize input XML string → # Validate parsed data structure
• Changed: try: → try:
• Changed: if not xml_string: → if not isinstance(xml_string, str):
• Changed: if not xml_string: → if not isinstance(cmd, str):
• Changed: if not xml_string: → if not cmd_args:
• Changed: raise ValueError("Empty XML string") → logging.error("Invalid input type for XML parsing")
• Changed: raise ValueError("Empty XML string") → raise TypeError("XML input must be a string")
• Changed: raise ValueError("Empty XML string") → raise TypeError("Response data must be a string")
• Changed: raise ValueError("Empty XML string") → raise ValueError("Response must be a JSON object or array")
• Changed: raise ValueError("Empty XML string") → raise TypeError("Command must be a string")
• Changed: raise ValueError("Empty XML string") → raise ValueError("Empty command")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Command not allowed: {base_cmd}")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Command flags not allowed: {arg}")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Invalid character in argument: {arg}")
• Changed: except ValueError as e: → except (json.JSONDecodeError, ValueError) as e:
• Changed: except ValueError as e: → except (ValueError, subprocess.SubprocessError) as e:
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: # Parse XML string securely → # Validate parsed data structure
• Changed: try: → try:
• Changed: tree = ET.fromstring(xml_string, parser=parser) → if not isinstance(xml_string, str):
• Changed: except ET.ParseError as e: → except (json.JSONDecodeError, ValueError) as e:
• Changed: except ET.ParseError as e: → except (ValueError, subprocess.SubprocessError) as e:
• Changed: # Handle XML parsing errors → # Set strict parsing options
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: return tree → return parsed_data
• Changed: return tree → return result.stdout
• Changed: # Secure command execution → """Secure command execution with strict validation"""
• Changed: cmd_args = shlex.split(cmd) → cmd_args = shlex.split(cmd)
• Changed: return result.stdout → return parsed_data
• Changed: return result.stdout → return result.stdout

Removed:

• Handle invalid JSON data

• Sample vulnerable API code

• def make_request(url):

• SSL verification disabled

• return requests.get(url, verify=False)
• import defusedxml.ElementTree as ET
• parser = ET.XMLParser(resolve_entities=False)
• import defusedxml.ElementTree as ET
• def make_request(url):

• Insecure request

• return requests.get(url, verify=False)

• Disable external entity resolution to prevent XXE attacks

• parser = ET.XMLParser(resolve_entities=False)
• xml_string = xml_string.strip()
• print(f"Error: {e}")
• print(f"Error: {e}")
• result = subprocess.run(cmd_args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/app.py, /workspaces/agentic-security/tests/samples/auth.py, /workspaces/agentic-security/tests/samples/api.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/app.py: Added:

• subprocess.run(['echo', user_input], shell=False, check=True)...
• subprocess.run(['echo', user_input], shell=False, check=True)...

• Safe HTML output with proper escaping...

Modified:

• Changed: import os → import subprocess
• Changed: import os → import shlex
• Changed: # Security Issue 2: Command Injection → # Use subprocess with shell=False for safe command execution
• Changed: # Command injection vulnerability → # Safe command execution using subprocess
• Changed: return f"
  {comment}
  " → return f"
  {escape(comment)}
  "

Removed:

• os.system(f"echo {user_input}")
• os.system(f"echo {user_input}")

• XSS vulnerability

Changes in /workspaces/agentic-security/tests/samples/api.py: Added:

• r'<!ENTITY',...
• r'<!DOCTYPE',...
• r'<!ELEMENT',...
• r'<!ATTLIST',...
• r'<?xml-stylesheet',...
• r'data:',...
• r'file:',...
• r'gopher:',...
• r'http:',...
• r'ftp:'...
• ]...
• if not isinstance(response_data, str):...
• parse_float=decimal.Decimal, # Use Decimal for precise floating point...
• parse_constant=lambda x: ValueError(f'Invalid constant {x}') # Reject inf/nan...
• if not isinstance(parsed_data, (dict, list)):...
• New import: from typing import Union, Dict, List, Any

• Whitelist of allowed commands...

• ALLOWED_COMMANDS = {'ls', 'dir', 'echo', 'pwd'}...

• Safely split command...

• Validate base command...

• base_cmd = cmd_args[0].lower()...
• if base_cmd not in ALLOWED_COMMANDS:...
• for arg in cmd_args[1:]:...
• if arg.startswith('-'):...
• if any(c in arg for c in ';&|$()`'):...

• Execute with restricted permissions...

• cmd_args,...
• text=True,...
• shell=False, # Prevent shell injection...
• timeout=10, # Prevent hanging...
• check=True # Raise on non-zero exit...

Modified:

• Changed: """Secure XML parsing with XXE protection""" → """Secure XML parsing with XXE protection and strict validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure response handling with validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure command execution with strict validation"""
• Changed: # Additional input validation → # Comprehensive input validation
• Changed: # Additional input validation → # Additional argument validation
• Changed: # Reject XML strings with potential malicious patterns → """Secure XML parsing with XXE protection and strict validation"""
• Changed: # Reject XML strings with potential malicious patterns → raise ValueError(f"Invalid XML string: Potentially malicious content detected: {pattern}")
• Changed: malicious_patterns = [r'<!ENTITY', r'<!DOCTYPE'] → malicious_patterns = [
• Changed: raise ValueError("Invalid XML string: Potential XXE attack detected") → raise ValueError(f"Invalid XML string: Potentially malicious content detected: {pattern}")
• Changed: raise ValueError("Invalid XML string: Potential XXE attack detected") → raise ValueError(f"Invalid character in argument: {arg}")
• Changed: # Handle invalid input with proper error logging → logging.error("Invalid input type for XML parsing")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid input type for XML parsing")
• Changed: logging.error(f"Error: {e}") → logging.error(f"XML Validation Error: {str(e)}")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid response data type")
• Changed: logging.error(f"Error: {e}") → logging.error(f"JSON Processing Error: {str(e)}")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid command type")
• Changed: logging.error(f"Error: {e}") → logging.error(f"Command Execution Error: {str(e)}")
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
• Changed: """Secure response handling""" → """Secure response handling with validation"""
• Changed: return json.loads(response_data) → parsed_data = json.loads(
• Changed: return json.loads(response_data) → response_data,
• Changed: return json.loads(response_data) → return parsed_data
• Changed: except json.JSONDecodeError: → except (json.JSONDecodeError, ValueError) as e:
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: def parse_xml(xml_string): → if not isinstance(xml_string, str):
• Changed: # Secure XML parsing → # Set strict parsing options
• Changed: return ET.fromstring(xml_string, parser=parser) → if not isinstance(xml_string, str):
• Changed: import requests → import json
• Changed: import requests → import decimal
• Changed: import requests → import subprocess
• Changed: import requests → import shlex
• Changed: import requests → import re
• Changed: import subprocess → import json
• Changed: import subprocess → import decimal
• Changed: import subprocess → import logging
• Changed: import subprocess → import subprocess
• Changed: import subprocess → import shlex
• Changed: import subprocess → import re
• Changed: import subprocess → result = subprocess.run(
• Changed: import subprocess → stdout=subprocess.PIPE,
• Changed: import subprocess → stderr=subprocess.PIPE,
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• Changed: def parse_xml(xml_string): → if not isinstance(xml_string, str):
• Changed: """Secure XML parsing with XXE protection""" → """Secure XML parsing with XXE protection and strict validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure response handling with validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure command execution with strict validation"""
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• Changed: # Validate and sanitize input XML string → # Validate parsed data structure
• Changed: try: → try:
• Changed: if not xml_string: → if not isinstance(xml_string, str):
• Changed: if not xml_string: → if not isinstance(cmd, str):
• Changed: if not xml_string: → if not cmd_args:
• Changed: raise ValueError("Empty XML string") → logging.error("Invalid input type for XML parsing")
• Changed: raise ValueError("Empty XML string") → raise TypeError("XML input must be a string")
• Changed: raise ValueError("Empty XML string") → raise TypeError("Response data must be a string")
• Changed: raise ValueError("Empty XML string") → raise ValueError("Response must be a JSON object or array")
• Changed: raise ValueError("Empty XML string") → raise TypeError("Command must be a string")
• Changed: raise ValueError("Empty XML string") → raise ValueError("Empty command")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Command not allowed: {base_cmd}")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Command flags not allowed: {arg}")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Invalid character in argument: {arg}")
• Changed: except ValueError as e: → except (json.JSONDecodeError, ValueError) as e:
• Changed: except ValueError as e: → except (ValueError, subprocess.SubprocessError) as e:
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: # Parse XML string securely → # Validate parsed data structure
• Changed: try: → try:
• Changed: tree = ET.fromstring(xml_string, parser=parser) → if not isinstance(xml_string, str):
• Changed: except ET.ParseError as e: → except (json.JSONDecodeError, ValueError) as e:
• Changed: except ET.ParseError as e: → except (ValueError, subprocess.SubprocessError) as e:
• Changed: # Handle XML parsing errors → # Set strict parsing options
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: return tree → return parsed_data
• Changed: return tree → return result.stdout
• Changed: # Secure command execution → """Secure command execution with strict validation"""
• Changed: cmd_args = shlex.split(cmd) → cmd_args = shlex.split(cmd)
• Changed: return result.stdout → return parsed_data
• Changed: return result.stdout → return result.stdout

Removed:

• Handle invalid JSON data

• Sample vulnerable API code

• def make_request(url):

• SSL verification disabled

• return requests.get(url, verify=False)
• import defusedxml.ElementTree as ET
• parser = ET.XMLParser(resolve_entities=False)
• import defusedxml.ElementTree as ET
• def make_request(url):

• Insecure request

• return requests.get(url, verify=False)

• Disable external entity resolution to prevent XXE attacks

• parser = ET.XMLParser(resolve_entities=False)
• xml_string = xml_string.strip()
• print(f"Error: {e}")
• print(f"Error: {e}")
• result = subprocess.run(cmd_args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/app.py, /workspaces/agentic-security/tests/samples/auth.py, /workspaces/agentic-security/tests/samples/api.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/app.py: Added:

• subprocess.run(['echo', user_input], shell=False, check=True)...
• subprocess.run(['echo', user_input], shell=False, check=True)...

• Safe HTML output with proper escaping...

Modified:

• Changed: import os → import subprocess
• Changed: import os → import shlex
• Changed: # Security Issue 2: Command Injection → # Use subprocess with shell=False for safe command execution
• Changed: # Command injection vulnerability → # Safe command execution using subprocess
• Changed: return f"
  {comment}
  " → return f"
  {escape(comment)}
  "

Removed:

• os.system(f"echo {user_input}")
• os.system(f"echo {user_input}")

• XSS vulnerability

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• New class: TokenError
• """Custom exception for token-related errors"""...
• if not isinstance(password, str) or not isinstance(stored_hash, bytes):...
• if not isinstance(password, str):...
• raise ValueError("Password must be a string")...
• if not isinstance(user_data, dict):...
• raise ValueError("User data must be a dictionary")...

• Create a safe copy of user data...

• safe_data = {...
• 'user_id': str(user_data.get('user_id', '')),...
• 'username': str(user_data.get('username', '')),...
• 'role': str(user_data.get('role', 'user'))...
• }...
• Args:...
• secret: Secret key used for token verification...
• Dict containing verified token data or None if verification fails...
• Raises:...
• TokenError: If token format or content is invalid...
• if not isinstance(token, str) or not isinstance(secret, str):...
• raise TokenError("Invalid token or secret format")...

• Decode with explicit type verification...

• Validate expected data structure...

• if not isinstance(data, dict):...
• raise TokenError("Invalid token payload structure")...

• Verify required fields and types...

• required_fields = {...
• 'user_id': str,...
• 'username': str,...
• 'role': str,...
• 'exp': (int, float) # exp can be int or float timestamp...
• }...
• for field, expected_type in required_fields.items():...
• if field not in data:...
• raise TokenError(f"Missing required field: {field}")...
• if not isinstance(data[field], expected_type):...
• raise TokenError(f"Invalid type for field: {field}")...
• except Exception as e:...
• raise TokenError(f"Token verification failed: {str(e)}")...

Modified:

• Updated function: authenticate_user
• Updated function: generate_token
• Changed: """Secure token generation with proper secret and expiration""" → """Secure token generation with proper secret and expiration"""
• Changed: """Secure token generation with proper secret and expiration""" → Secure token verification with expiration check and safe deserialization
• Changed: secret = secrets.token_hex(32) # Generate secure secret key → secret = secrets.token_hex(32)
• Changed: user_data['exp'] = datetime.utcnow() + timedelta(hours=expiry_hours) → safe_data['exp'] = datetime.utcnow() + timedelta(hours=expiry_hours)
• Changed: token = jwt.encode(user_data, secret, algorithm='HS256') → token = jwt.encode(safe_data, secret, algorithm='HS256')
• Changed: return token, secret → return False
• Changed: return token, secret → return token, secret
• Changed: return token, secret → token: JWT token string
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• Updated function: hash_password
• Changed: def verify_token(token, secret): → return token, secret
• Updated function: verify_token
• Changed: """Secure token verification with expiration check""" → """Secure token generation with proper secret and expiration"""
• Changed: """Secure token verification with expiration check""" → Secure token verification with expiration check and safe deserialization
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• Updated function: hash_password
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• Updated function: generate_token
• Changed: """Secure token generation with proper secret and expiration""" → """Secure token generation with proper secret and expiration"""
• Changed: """Secure token generation with proper secret and expiration""" → Secure token verification with expiration check and safe deserialization
• Changed: secret = secrets.token_hex(32) # Generate secure secret key → secret = secrets.token_hex(32)
• Changed: user_data['exp'] = datetime.utcnow() + timedelta(hours=expiry_hours) → safe_data['exp'] = datetime.utcnow() + timedelta(hours=expiry_hours)
• Changed: token = jwt.encode(user_data, secret, algorithm='HS256') → token = jwt.encode(safe_data, secret, algorithm='HS256')
• Changed: return token, secret → return False
• Changed: return token, secret → return token, secret
• Changed: return token, secret → token: JWT token string
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• Changed: def verify_token(token, secret): → return token, secret
• Updated function: verify_token
• Changed: """Secure token verification with expiration check""" → """Secure token generation with proper secret and expiration"""
• Changed: """Secure token verification with expiration check""" → Secure token verification with expiration check and safe deserialization
• Changed: data = jwt.decode(token, secret, algorithms=['HS256']) → token = jwt.encode(safe_data, secret, algorithm='HS256')
• Changed: return data → return False
• Changed: return data → return token, secret
• Changed: return data → Returns:
• Changed: return None → return False
• Changed: return None → return token, secret
• Changed: return None → Returns:
• Changed: return None → return False
• Changed: return None → return token, secret
• Changed: return None → Returns:

Removed:

• Expiration is automatically checked by jwt.decode

• import bcrypt
• """Secure password hashing with bcrypt"""
• salt = bcrypt.gensalt()
• return bcrypt.hashpw(password.encode(), salt)
• import secrets
• try:

• Expiration is automatically checked by jwt.decode

• except jwt.ExpiredSignatureError:
• except jwt.InvalidTokenError: Changes in /workspaces/agentic-security/tests/samples/api.py: Added:
• r'<!ENTITY',...
• r'<!DOCTYPE',...
• r'<!ELEMENT',...
• r'<!ATTLIST',...
• r'<?xml-stylesheet',...
• r'data:',...
• r'file:',...
• r'gopher:',...
• r'http:',...
• r'ftp:'...
• ]...
• if not isinstance(response_data, str):...
• parse_float=decimal.Decimal, # Use Decimal for precise floating point...
• parse_constant=lambda x: ValueError(f'Invalid constant {x}') # Reject inf/nan...
• if not isinstance(parsed_data, (dict, list)):...
• New import: from typing import Union, Dict, List, Any

• Whitelist of allowed commands...

• ALLOWED_COMMANDS = {'ls', 'dir', 'echo', 'pwd'}...

• Safely split command...

• Validate base command...

• base_cmd = cmd_args[0].lower()...
• if base_cmd not in ALLOWED_COMMANDS:...
• for arg in cmd_args[1:]:...
• if arg.startswith('-'):...
• if any(c in arg for c in ';&|$()`'):...

• Execute with restricted permissions...

• cmd_args,...
• text=True,...
• shell=False, # Prevent shell injection...
• timeout=10, # Prevent hanging...
• check=True # Raise on non-zero exit...

Modified:

• Changed: """Secure XML parsing with XXE protection""" → """Secure XML parsing with XXE protection and strict validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure response handling with validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure command execution with strict validation"""
• Changed: # Additional input validation → # Comprehensive input validation
• Changed: # Additional input validation → # Additional argument validation
• Changed: # Reject XML strings with potential malicious patterns → """Secure XML parsing with XXE protection and strict validation"""
• Changed: # Reject XML strings with potential malicious patterns → raise ValueError(f"Invalid XML string: Potentially malicious content detected: {pattern}")
• Changed: malicious_patterns = [r'<!ENTITY', r'<!DOCTYPE'] → malicious_patterns = [
• Changed: raise ValueError("Invalid XML string: Potential XXE attack detected") → raise ValueError(f"Invalid XML string: Potentially malicious content detected: {pattern}")
• Changed: raise ValueError("Invalid XML string: Potential XXE attack detected") → raise ValueError(f"Invalid character in argument: {arg}")
• Changed: # Handle invalid input with proper error logging → logging.error("Invalid input type for XML parsing")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid input type for XML parsing")
• Changed: logging.error(f"Error: {e}") → logging.error(f"XML Validation Error: {str(e)}")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid response data type")
• Changed: logging.error(f"Error: {e}") → logging.error(f"JSON Processing Error: {str(e)}")
• Changed: logging.error(f"Error: {e}") → logging.error("Invalid command type")
• Changed: logging.error(f"Error: {e}") → logging.error(f"Command Execution Error: {str(e)}")
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
• Changed: """Secure response handling""" → """Secure response handling with validation"""
• Changed: return json.loads(response_data) → parsed_data = json.loads(
• Changed: return json.loads(response_data) → response_data,
• Changed: return json.loads(response_data) → return parsed_data
• Changed: except json.JSONDecodeError: → except (json.JSONDecodeError, ValueError) as e:
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: def parse_xml(xml_string): → if not isinstance(xml_string, str):
• Changed: # Secure XML parsing → # Set strict parsing options
• Changed: return ET.fromstring(xml_string, parser=parser) → if not isinstance(xml_string, str):
• Changed: import requests → import json
• Changed: import requests → import decimal
• Changed: import requests → import subprocess
• Changed: import requests → import shlex
• Changed: import requests → import re
• Changed: import subprocess → import json
• Changed: import subprocess → import decimal
• Changed: import subprocess → import logging
• Changed: import subprocess → import subprocess
• Changed: import subprocess → import shlex
• Changed: import subprocess → import re
• Changed: import subprocess → result = subprocess.run(
• Changed: import subprocess → stdout=subprocess.PIPE,
• Changed: import subprocess → stderr=subprocess.PIPE,
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• Changed: def parse_xml(xml_string): → if not isinstance(xml_string, str):
• Changed: """Secure XML parsing with XXE protection""" → """Secure XML parsing with XXE protection and strict validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure response handling with validation"""
• Changed: """Secure XML parsing with XXE protection""" → """Secure command execution with strict validation"""
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• Changed: # Validate and sanitize input XML string → # Validate parsed data structure
• Changed: try: → try:
• Changed: if not xml_string: → if not isinstance(xml_string, str):
• Changed: if not xml_string: → if not isinstance(cmd, str):
• Changed: if not xml_string: → if not cmd_args:
• Changed: raise ValueError("Empty XML string") → logging.error("Invalid input type for XML parsing")
• Changed: raise ValueError("Empty XML string") → raise TypeError("XML input must be a string")
• Changed: raise ValueError("Empty XML string") → raise TypeError("Response data must be a string")
• Changed: raise ValueError("Empty XML string") → raise ValueError("Response must be a JSON object or array")
• Changed: raise ValueError("Empty XML string") → raise TypeError("Command must be a string")
• Changed: raise ValueError("Empty XML string") → raise ValueError("Empty command")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Command not allowed: {base_cmd}")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Command flags not allowed: {arg}")
• Changed: raise ValueError("Empty XML string") → raise ValueError(f"Invalid character in argument: {arg}")
• Changed: except ValueError as e: → except (json.JSONDecodeError, ValueError) as e:
• Changed: except ValueError as e: → except (ValueError, subprocess.SubprocessError) as e:
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: # Parse XML string securely → # Validate parsed data structure
• Changed: try: → try:
• Changed: tree = ET.fromstring(xml_string, parser=parser) → if not isinstance(xml_string, str):
• Changed: except ET.ParseError as e: → except (json.JSONDecodeError, ValueError) as e:
• Changed: except ET.ParseError as e: → except (ValueError, subprocess.SubprocessError) as e:
• Changed: # Handle XML parsing errors → # Set strict parsing options
• Changed: return None → return parsed_data
• Changed: return None → return result.stdout
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• Changed: return tree → return parsed_data
• Changed: return tree → return result.stdout
• Changed: # Secure command execution → """Secure command execution with strict validation"""
• Changed: cmd_args = shlex.split(cmd) → cmd_args = shlex.split(cmd)
• Changed: return result.stdout → return parsed_data
• Changed: return result.stdout → return result.stdout

Removed:

• Handle invalid JSON data

• Sample vulnerable API code

• def make_request(url):

• SSL verification disabled

• return requests.get(url, verify=False)
• import defusedxml.ElementTree as ET
• parser = ET.XMLParser(resolve_entities=False)
• import defusedxml.ElementTree as ET
• def make_request(url):

• Insecure request

• return requests.get(url, verify=False)

• Disable external entity resolution to prevent XXE attacks

• parser = ET.XMLParser(resolve_entities=False)
• xml_string = xml_string.strip()
• print(f"Error: {e}")
• print(f"Error: {e}")
• result = subprocess.run(cmd_args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples:Failed to generate diff summary: [Errno 21] Is a directory: '/workspaces/agentic-security/tests/samples'

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• New import: import hmac
• New import: from functools import wraps
• New import: from time import time
• New class: AuthenticationError

• Rate limiting storage...

• _auth_attempts = {}...
• _MAX_ATTEMPTS = 5...
• _LOCKOUT_TIME = 300 # 5 minutes in seconds...
• New function: _check_rate_limit
• current_time = time()...
• if username in _auth_attempts:...
• attempts, lockout_time = _auth_attempts[username]...
• if current_time < lockout_time:...
• raise AuthenticationError("Too many attempts. Please try again later.")...
• if current_time - lockout_time > _LOCKOUT_TIME:...
• _auth_attempts[username] = (1, current_time)...
• else:...
• if attempts >= _MAX_ATTEMPTS:...
• _auth_attempts[username] = (attempts, current_time)...
• raise AuthenticationError("Too many attempts. Please try again later.")...
• _auth_attempts[username] = (attempts + 1, current_time)...
• else:...
• _auth_attempts[username] = (1, current_time)...
• _check_rate_limit(username)...

• Use constant-time comparison...

• is_valid = hmac.compare_digest(...
• if not is_valid:...
• raise AuthenticationError("Invalid credentials")...
• raise AuthenticationError("Authentication failed")...
• 'alg': 'HS512',...
• 'enc': 'none'...
• data = jwt.decode(...
• token,...
• secret,...
• algorithms=['HS512'],...
• options={...
• 'verify_signature': True,...
• 'verify_exp': True,...
• 'verify_nbf': True,...
• 'verify_iat': True,...
• 'verify_aud': True,...
• 'require': ['exp', 'iat', 'nbf']...
• }...

Modified:

• Changed: """Secure authentication with bcrypt""" → """Custom exception for authentication-related errors"""
• Changed: """Secure authentication with bcrypt""" → """Check if authentication attempts are within allowed limits"""
• Changed: """Secure authentication with bcrypt""" → """Secure authentication with bcrypt and rate limiting"""
• Changed: """Secure authentication with bcrypt""" → raise AuthenticationError("Invalid input format")
• Changed: """Secure authentication with bcrypt""" → except AuthenticationError:
• Changed: return False → return True
• Changed: return bcrypt.checkpw(password.encode(), stored_hash) → bcrypt.hashpw(password.encode(), stored_hash),
• Changed: except Exception: → except AuthenticationError:
• Changed: except Exception: → except Exception as e:
• Changed: return False → return True
• Changed: # Use more secure JWT options → # Use more secure JWT options with additional headers
• Changed: 'typ': 'JWT' → 'typ': 'JWT',
• Changed: 'typ': 'JWT' → 'cty': 'JWT',

Removed:

• data = jwt.decode(token, secret, algorithms=['HS256'])

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py:Failed to generate diff summary: list index out of range

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• New import: from typing import Dict, Optional
• _redis_pool: Optional[ConnectionPool] = None...
• _redis_pool = ConnectionPool(...
• host='localhost',...
• port=6379,...
• db=0,...
• ssl=True,...
• ssl_cert_reqs='required',...
• ssl_ca_certs='/etc/ssl/certs/ca-certificates.crt',...
• max_connections=10,...
• socket_timeout=5.0,...
• retry_on_timeout=True...
• if not isinstance(ip_address, str) or not ip_address.strip():...
• raise AuthenticationError("Invalid IP address format")...
• pipe = redis.pipeline()...

• Check both user and IP limits...

• raise AuthenticationError("Too many attempts from this IP address")...
• pipe.execute()...
• 'zip': 'none', # Explicitly disable compression...
• 'x5t': secrets.token_urlsafe(32), # Add thumbprint for key tracking...
• 'jku': None, # Explicitly disable JWK URL...
• 'x5u': None # Explicitly disable x509 URL...

Modified:

• Changed: # Redis connection for rate limiting → from redis.connection import ConnectionPool
• Changed: # Redis connection for rate limiting → # Redis connection pool for rate limiting
• Changed: """Get Redis connection with lazy initialization""" → from redis.connection import ConnectionPool
• Changed: """Get Redis connection with lazy initialization""" → # Redis connection pool for rate limiting
• Changed: """Get Redis connection with lazy initialization""" → """Get Redis connection with connection pooling and SSL verification"""
• Changed: global _redis_client → global _redis_pool, _redis_client
• Changed: global _redis_client → if _redis_pool is None:
• Changed: _redis_client = Redis(host='localhost', port=6379, db=0, ssl=True) → _redis_client = Redis(connection_pool=_redis_pool)
• Updated function: _check_rate_limit
• Changed: def _check_rate_limit(username: str) -> None: → _check_rate_limit(username, ip_address)
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: redis_key = f"{_REDIS_KEY_PREFIX}{username}" → user_key = f"{_REDIS_KEY_PREFIX}user:{username}"
• Changed: redis_key = f"{_REDIS_KEY_PREFIX}{username}" → ip_key = f"{_REDIS_KEY_PREFIX}ip:{ip_address}"
• Changed: attempts = int(redis.get(redis_key) or 0) → user_attempts = int(redis.get(user_key) or 0)
• Changed: attempts = int(redis.get(redis_key) or 0) → ip_attempts = int(redis.get(ip_key) or 0)
• Changed: attempts = int(redis.get(redis_key) or 0) → lockout_remaining = redis.ttl(ip_key)
• Changed: →
• Changed: →
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• Changed: →
• Changed: →
• Changed: if attempts >= _MAX_ATTEMPTS: → if user_attempts >= _MAX_ATTEMPTS:
• Changed: if attempts >= _MAX_ATTEMPTS: → if ip_attempts >= _MAX_ATTEMPTS * 2: # Higher limit for IPs
• Changed: lockout_remaining = redis.ttl(redis_key) → lockout_remaining = redis.ttl(user_key)
• Changed: lockout_remaining = redis.ttl(redis_key) → lockout_remaining = redis.ttl(ip_key)
• Changed: lockout_remaining = redis.ttl(redis_key) → if lockout_remaining > 0:
• Changed: logger.warning(f"Rate limit exceeded for user: {username}") → logger.warning(f"User rate limit exceeded: {username}")
• Changed: logger.warning(f"Rate limit exceeded for user: {username}") → logger.warning(f"IP rate limit exceeded: {ip_address}")
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: # Increment attempts and set expiry → # Increment both counters atomically
• Changed: redis.incr(redis_key) → redis = _get_redis()
• Changed: redis.incr(redis_key) → pipe.incr(user_key)
• Changed: redis.incr(redis_key) → pipe.incr(ip_key)
• Changed: redis.expire(redis_key, _LOCKOUT_TIME) → pipe.expire(user_key, _LOCKOUT_TIME)
• Changed: redis.expire(redis_key, _LOCKOUT_TIME) → pipe.expire(ip_key, _LOCKOUT_TIME)
• Updated function: authenticate_user
• Updated function: authenticate_user
• Changed: _check_rate_limit(username) → def _check_rate_limit(username: str, ip_address: str) -> None:
• Changed: _check_rate_limit(username) → # Rate limit both by username and IP
• Changed: _check_rate_limit(username) → _check_rate_limit(username, ip_address)
• Changed: # Use more secure JWT options with additional headers → # Use more secure JWT options with enhanced headers
• Changed: 'kid': secrets.token_hex(8), → 'kid': secrets.token_hex(16), # Increased key ID length
• Changed: 'enc': 'none' → 'enc': 'none',

Removed:

• current_time = time()

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• New import: from redis.retry import Retry
• New import: from redis.backoff import ExponentialBackoff
• New import: from redis.exceptions import ConnectionError, TimeoutError
• retry = Retry(ExponentialBackoff(), 3)...
• socket_keepalive=True,...
• retry=retry,...
• health_check_interval=30...
• try:...

• Test connection...

• except (ConnectionError, TimeoutError) as e:...
• logger.error(f"Redis connection failed: {str(e)}")...
• raise AuthenticationError("Authentication service temporarily unavailable")...

• Sanitize inputs...

• username = username.lower().strip()...
• ip_address = ip_address.strip()...

• Use multiple time windows for rate limiting...

• windows = {...
• 'minute': 60,...
• 'hour': 3600,...
• 'day': 86400...
• }...
• limits = {...
• 'minute': 3,...
• 'hour': 10,...
• 'day': 20...
• }...

• Define Redis keys for rate limiting...

• current_time = int(time())...
• pepper = os.getenv('PASSWORD_PEPPER', secrets.token_hex(32))...
• salted_pass = f"{password}{pepper}".encode()...

• Increased work factor (14 is stronger but slower)...

• audience: Expected token audience to validate against...
• """Security configuration settings"""...
• New import: import os
• New import: from datetime import timedelta

• Redis rate limiting settings...

• RATE_LIMIT_WINDOWS = {...
• 'minute': 60,...
• 'hour': 3600,...
• 'day': 86400...
• }...
• RATE_LIMIT_ATTEMPTS = {...
• 'minute': 3,...
• 'hour': 10,...
• 'day': 20...
• }...

• Password security...

• MIN_PASSWORD_LENGTH = 12...
• PASSWORD_ROUNDS = 14...
• PASSWORD_PEPPER = os.getenv('PASSWORD_PEPPER', None)...

• Token settings...

• TOKEN_EXPIRY = timedelta(hours=24)...
• TOKEN_ALGORITHM = 'HS512'...
• REQUIRED_CLAIMS = ['exp', 'iat', 'nbf', 'aud', 'sub']...

• Redis connection...

• REDIS_CONFIG = {...
• 'host': os.getenv('REDIS_HOST', 'localhost'),...
• 'port': int(os.getenv('REDIS_PORT', 6379)),...
• 'db': int(os.getenv('REDIS_DB', 0)),...
• 'ssl': True,...
• 'ssl_cert_reqs': 'required',...
• 'ssl_ca_certs': '/etc/ssl/certs/ca-certificates.crt',...
• 'socket_timeout': 5.0,...
• 'socket_keepalive': True,...
• 'health_check_interval': 30...
• }...

Modified:

• Changed: """Get Redis connection with connection pooling and SSL verification""" → """Get Redis connection with connection pooling, SSL verification and retries"""
• Changed: retry_on_timeout=True → retry_on_timeout=True,
• Changed: if _redis_client is None: → if _redis_client is None:
• Changed: if _redis_client is None: → _redis_client = Redis(connection_pool=_redis_pool)
• Changed: if _redis_client is None: → _redis_client.ping()
• Changed: if _redis_client is None: → return _redis_client
• Changed: _redis_client = Redis(connection_pool=_redis_pool) → if _redis_client is None:
• Changed: _redis_client = Redis(connection_pool=_redis_pool) → _redis_client = Redis(connection_pool=_redis_pool)
• Changed: return _redis_client → if _redis_client is None:
• Changed: return _redis_client → _redis_client.ping()
• Changed: return _redis_client → return _redis_client
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: →
• Changed: # Use stronger work factor for bcrypt → # Use stronger work factor for bcrypt and add pepper
• Changed: salt = bcrypt.gensalt(rounds=12) → salt = bcrypt.gensalt(rounds=14)
• Changed: return bcrypt.hashpw(password.encode(), salt) → return bcrypt.hashpw(salted_pass, salt)
• Updated function: verify_token

Removed:

• Rate limit both by username and IP

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py:Failed to generate diff summary: list index out of range

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• _MAX_POOL_SIZE = 10...
• _MAX_POOL_TIMEOUT = 5...
• """Security configuration constants"""...
• New import: from typing import Dict, Final

• Rate limiting windows and attempts...

• RATE_LIMIT_WINDOWS: Final[Dict[str, int]] = {...
• 'minute': 60,...
• 'hour': 3600,...
• 'day': 86400,...
• 'week': 604800...
• }...
• RATE_LIMIT_ATTEMPTS: Final[Dict[str, int]] = {...
• 'minute': 3,...
• 'hour': 10,...
• 'day': 20,...
• 'week': 50...
• }...
• REDIS_MAX_POOL_SIZE: Final[int] = 10...
• REDIS_POOL_TIMEOUT: Final[int] = 5...
• REDIS_CONNECT_TIMEOUT: Final[float] = 2.0...
• REDIS_SOCKET_TIMEOUT: Final[float] = 3.0...
• MIN_PASSWORD_LENGTH: Final[int] = 16...
• BCRYPT_ROUNDS: Final[int] = 16...
• PASSWORD_COMPLEXITY: Final[Dict[str, str]] = {...
• 'uppercase': r'[A-Z]',...
• 'lowercase': r'[a-z]',...
• 'numbers': r'\d',...
• 'special': r'[!@#$%^&*(),.?":{}|<>]'...
• }...

• Token security...

• TOKEN_EXPIRY_HOURS: Final[int] = 1...
• TOKEN_ALGORITHM: Final[str] = 'HS512'...
• REQUIRED_TOKEN_CLAIMS: Final[tuple] = (...
• 'exp', 'iat', 'nbf', 'aud', 'sub', 'jti',...
• 'auth_time', 'nonce', 'sid'...

• Key rotation...

• KEY_ROTATION_HOURS: Final[int] = 24...
• KEY_LENGTH_BYTES: Final[int] = 64 # 512 bits...

Modified:

• Changed: # Redis connection pool for rate limiting → # Redis connection pool for rate limiting with strict limits
• Changed: # Redis connection pool for rate limiting → # Redis security settings
• Changed: 'max_connections': int(os.getenv('REDIS_MAX_CONNECTIONS', '20')), → 'max_connections': int(os.getenv('REDIS_MAX_CONNECTIONS', str(_MAX_POOL_SIZE))),
• Changed: # Use work factor 15 for increased security → # Use work factor 16 for increased security (industry recommended minimum)
• Changed: # Use work factor 15 for increased security → # Password security
• Changed: salt = bcrypt.gensalt(rounds=15) → salt = bcrypt.gensalt(rounds=16)
• Changed: expiry_hours: int = 12, # Reduced default expiry → expiry_hours: int = 1, # Reduced token lifetime for security

Removed:

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• New import: import ipaddress

• Validate IP address format...

• try:...
• ipaddress.ip_address(ip_address)...
• except ValueError:...
• raise AuthenticationError("Invalid IP address format")...
• ip_address: str = None...
• if ip_address:...
• redis = _get_redis()...
• token_key = f"token_gen:{ip_address}"...
• token_count = redis.incr(token_key)...
• if token_count == 1:...
• redis.expire(token_key, 3600) # 1 hour window...
• if token_count > 10: # Max 10 tokens per hour per IP...
• raise TokenError("Token generation rate limit exceeded")...

• First verify signature in constant time...

• try:...
• jwt.get_unverified_header(token)...
• except jwt.InvalidTokenError:...
• return None...
• New import: from auth_config import KEY_ROTATION_INTERVAL, MINIMUM_KEY_AGE, MAX_KEY_AGE

• Check if key is too new to rotate...

• key_age = time.time() - os.path.getmtime(self._key_path)...
• if key_age < MINIMUM_KEY_AGE:...
• return...

• Force rotation if key is too old...

• if key_age > MAX_KEY_AGE:...
• return...

• Normal rotation after interval...

• if key_age > KEY_ROTATION_INTERVAL:...
• """Security configuration constants"""...
• New import: from typing import Dict, Final
• New import: import os

• Token generation rate limits...

• TOKEN_RATE_LIMIT_WINDOW: Final[int] = 3600 # 1 hour...
• TOKEN_RATE_LIMIT_MAX: Final[int] = 10 # tokens per window...

• Key rotation settings...

• KEY_ROTATION_INTERVAL: Final[int] = 3600 # 1 hour...
• MINIMUM_KEY_AGE: Final[int] = 300 # 5 minutes...
• MAX_KEY_AGE: Final[int] = 7200 # 2 hours...

• Redis security settings...

• REDIS_SECURITY_CONFIG: Final[Dict] = {...
• 'ssl': True,...
• 'ssl_cert_reqs': 'required',...
• 'ssl_ca_certs': os.getenv('REDIS_CA_CERTS', '/etc/ssl/certs/ca-certificates.crt'),...
• 'socket_timeout': 3.0,...
• 'socket_connect_timeout': 2.0,...
• 'health_check_interval': 30,...
• 'retry_on_timeout': True...
• }...

• Token security settings...

• TOKEN_SECURITY_CONFIG: Final[Dict] = {...
• 'algorithms': ['HS512'],...
• 'verify_signature': True,...
• 'verify_exp': True,...
• 'verify_nbf': True,...
• 'verify_iat': True,...
• 'verify_aud': True,...
• 'require': ['exp', 'iat', 'nbf', 'aud', 'sub', 'jti']...
• }...

Modified:

• Changed: expiry_hours: int = 1, # Reduced token lifetime for security → expiry_hours: int = 1,
• Changed: device_info: Optional[Dict] = None → device_info: Optional[Dict] = None,
• Changed: # Decode with explicit type verification → # Rate limit token generation by IP
• Changed: # Decode with explicit type verification → # Then decode with explicit verification
• Changed: """Rotate the secret key""" → """Rotate the secret key with safety checks"""
• Changed: self._generate_new_key() → self._generate_new_key()
• Changed: self._generate_new_key() → self._generate_new_key()

Removed:

Security Fix

• Applied security fixes to: /workspaces/agentic-security/tests/samples/auth.py
• Changes made based on provided instructions

Changes in /workspaces/agentic-security/tests/samples/auth.py: Added:

• Validate IP address format before rate limiting...

• ip = ipaddress.ip_address(ip_address)...
• if ip.is_private or ip.is_loopback or ip.is_multicast:...
• except ValueError:...
• try:...
• pepper = os.getenv('PASSWORD_PEPPER')...
• salted_pass = f"{password}{pepper}".encode('utf-8')...
• logger.warning(f"Failed login attempt for user: {username}")...
• logger.info(f"Successful authentication for user: {username}")...
• logger.error(f"Authentication error: {str(e)}")...
• if not all(isinstance(x, str) for x in filter(None, [token, secret, audience])):...

• Rate limit token verification attempts...

• redis = _get_redis()...
• verify_key = f"token_verify:{datetime.utcnow().strftime('%Y%m%d%H')}"...
• if int(redis.incr(verify_key)) > 1000: # Max 1000 verifications per hour...
• MAX_KEY_AGE, KEY_LENGTH_BYTES)...
• current_time = time.time()...
• try:...

• Verify key file permissions and ownership...

• if key_stats.st_mode & 0o777 != 0o600:...
• logger.warning("Forcing key rotation due to age")...
• logger.info("Performing scheduled key rotation")...
• except OSError as e:...
• logger.error(f"Key file error during rotation: {str(e)}")...
• """Centralized security configuration"""...
• New import: from typing import Dict, Final
• New import: import os
• New import: from datetime import timedelta

• Rate limiting configuration...

• RATE_LIMIT_WINDOWS: Final[Dict[str, int]] = {...
• 'minute': 60,...
• 'hour': 3600,...
• 'day': 86400,...
• 'week': 604800...
• }...
• RATE_LIMIT_ATTEMPTS: Final[Dict[str, int]] = {...
• 'minute': 3,...
• 'hour': 10,...
• 'day': 20,...
• 'week': 50...
• }...

• Redis security configuration...

• REDIS_CONFIG: Final[Dict] = {...
• 'host': os.getenv('REDIS_HOST', 'localhost'),...
• 'port': int(os.getenv('REDIS_PORT', '6379')),...
• 'db': int(os.getenv('REDIS_DB', '0')),...
• 'password': os.getenv('REDIS_PASSWORD'),...
• 'ssl': True,...
• 'ssl_cert_reqs': 'required',...
• 'ssl_ca_certs': os.getenv('REDIS_CA_CERTS', '/etc/ssl/certs/ca-certificates.crt'),...
• 'ssl_certfile': os.getenv('REDIS_CERT_FILE'),...
• 'ssl_keyfile': os.getenv('REDIS_KEY_FILE'),...
• 'socket_timeout': 3.0,...
• 'socket_connect_timeout': 2.0,...
• 'socket_keepalive': True,...
• 'health_check_interval': 30,...
• 'retry_on_timeout': True,...
• 'max_connections': 10,...
• 'retry_on_error': [TimeoutError, ConnectionError]...
• }...

• Password security settings...

• MIN_PASSWORD_LENGTH: Final[int] = 16...
• BCRYPT_ROUNDS: Final[int] = 16...
• PASSWORD_COMPLEXITY: Final[Dict[str, str]] = {...
• 'uppercase': r'[A-Z]',...
• 'lowercase': r'[a-z]',...
• 'numbers': r'\d',...
• 'special': r'[!@#$%^&*(),.?":{}|<>]'...
• }...

• Token security settings...

• TOKEN_EXPIRY: Final[timedelta] = timedelta(hours=1)...
• TOKEN_ALGORITHM: Final[str] = 'HS512'...
• REQUIRED_TOKEN_CLAIMS: Final[tuple] = (...
• 'exp', 'iat', 'nbf', 'aud', 'sub', 'jti',...
• 'auth_time', 'nonce', 'sid'...
• TOKEN_RATE_LIMIT_WINDOW: Final[int] = 3600 # 1 hour...
• TOKEN_RATE_LIMIT_MAX: Final[int] = 10 # tokens per window...
• MINIMUM_KEY_AGE: Final[int] = 300 # 5 minutes...
• MAX_KEY_AGE: Final[int] = 7200 # 2 hours...
• KEY_LENGTH_BYTES: Final[int] = 64 # 512 bits...

Modified:

• Changed: if not isinstance(password, str) or not isinstance(stored_hash, bytes): → if not isinstance(stored_hash, bytes):
• Changed: raise AuthenticationError("Invalid input format") → raise AuthenticationError("Invalid input types")
• Changed: raise AuthenticationError("Invalid input format") → raise AuthenticationError("Invalid hash format")
• Changed: raise AuthenticationError("Invalid input format") → raise AuthenticationError("Invalid IP address")
• Changed: raise AuthenticationError("Invalid input format") → raise AuthenticationError("Invalid IP address format")
• Changed: raise AuthenticationError("Invalid input format") → raise AuthenticationError("Security configuration error")
• Changed: raise AuthenticationError("Invalid input format") → raise TokenError("Invalid input types")
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• Changed: _check_rate_limit(username, ip_address) → _check_rate_limit(username, str(ip))
• Changed: # Use constant-time comparison → # Add pepper before comparing
• Changed: # Use constant-time comparison → # Use constant-time comparison with pepper
• Changed: is_valid = hmac.compare_digest( → if not hmac.compare_digest(computed_hash, stored_hash):
• Changed: bcrypt.hashpw(password.encode(), stored_hash), → computed_hash = bcrypt.hashpw(salted_pass, stored_hash)
• Changed: ) → )
• Changed: if not is_valid: → if not pepper:
• Changed: Secure token verification with expiration check and safe deserialization → Secure token verification with enhanced security checks
• Changed: if not isinstance(token, str) or not isinstance(secret, str): → if not all(isinstance(x, str) for x in (username, password, ip_address)):
• Changed: if not isinstance(token, str) or not isinstance(secret, str): → if not isinstance(stored_hash, bytes):
• Changed: raise TokenError("Invalid token or secret format") → raise AuthenticationError("Invalid input types")
• Changed: raise TokenError("Invalid token or secret format") → raise AuthenticationError("Invalid hash format")
• Changed: raise TokenError("Invalid token or secret format") → raise AuthenticationError("Invalid IP address")
• Changed: raise TokenError("Invalid token or secret format") → raise AuthenticationError("Invalid IP address format")
• Changed: raise TokenError("Invalid token or secret format") → raise TokenError("Invalid input types")
• Changed: raise TokenError("Invalid token or secret format") → raise TokenError("Token verification rate limit exceeded")
• Changed: raise TokenError("Invalid token or secret format") → logger.error("Invalid key file permissions")
• Changed: """Rotate the secret key with safety checks""" → """Rotate the secret key with enhanced security checks"""
• Changed: from auth_config import KEY_ROTATION_INTERVAL, MINIMUM_KEY_AGE, MAX_KEY_AGE → from auth_config import (KEY_ROTATION_INTERVAL, MINIMUM_KEY_AGE,
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• Changed: # Check if key is too new to rotate → # Check if key is too new to rotate
• Changed: # Check if key is too new to rotate → logger.debug("Key too new for rotation")
• Changed: # Check if key is too new to rotate → # Force rotation if key is too old
• Changed: key_age = time.time() - os.path.getmtime(self._key_path) → key_age = current_time - os.path.getmtime(self._key_path)
• Changed: key_age = time.time() - os.path.getmtime(self._key_path) → key_stats = os.stat(self._key_path)
• Changed: if key_age < MINIMUM_KEY_AGE: → if key_age < MINIMUM_KEY_AGE:
• Changed: if key_age < MINIMUM_KEY_AGE: → if key_age > MAX_KEY_AGE:
• Changed: if key_age < MINIMUM_KEY_AGE: → if key_age > KEY_ROTATION_INTERVAL:
• Changed: return → return
• Changed: return → return
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• Changed: # Force rotation if key is too old → # Check if key is too new to rotate
• Changed: # Force rotation if key is too old → # Force rotation if key is too old
• Changed: # Force rotation if key is too old → # Normal rotation after interval
• Changed: # Force rotation if key is too old → # Key rotation settings
• Changed: if key_age > MAX_KEY_AGE: → if key_age < MINIMUM_KEY_AGE:
• Changed: if key_age > MAX_KEY_AGE: → if key_age > MAX_KEY_AGE:
• Changed: if key_age > MAX_KEY_AGE: → if key_age > KEY_ROTATION_INTERVAL:
• Changed: self._generate_new_key() → self._generate_new_key()
• Changed: self._generate_new_key() → self._generate_new_key()
• Changed: self._generate_new_key() → self._generate_new_key()
• Changed: return → return
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• Changed: # Normal rotation after interval → # Force rotation if key is too old
• Changed: # Normal rotation after interval → # Normal rotation after interval
• Changed: # Normal rotation after interval → # Key rotation settings
• Changed: if key_age > KEY_ROTATION_INTERVAL: → if key_age < MINIMUM_KEY_AGE:
• Changed: if key_age > KEY_ROTATION_INTERVAL: → if key_age > MAX_KEY_AGE:
• Changed: if key_age > KEY_ROTATION_INTERVAL: → if key_age > KEY_ROTATION_INTERVAL:
• Changed: if key_age > KEY_ROTATION_INTERVAL: → KEY_ROTATION_INTERVAL: Final[int] = 3600 # 1 hour

Removed: