Description

Following Admin APIs in Ory Hydra are vulnerable to SQL injection due to flaws in its pagination implementation:

• listOAuth2Clients
• listOAuth2ConsentSessions
• listTrustedOAuth2JwtGrantIssuers

Pagination tokens are encrypted using the secret configured in secrets.pagination. If this value is not set, Hydra falls back to using secrets.system. An attacker who knows this secret can craft their own tokens, including malicious tokens that lead to SQL injection.

Preconditions

This issue can be exploited when the following conditions are met:

• One or more admin APIs listed above are directly or indirectly accessible to the attacker
• The attacker can pass a raw pagination token to the affected API
• The configuration value secrets.pagination is set and known to the attacker, or secrets.pagination is not set and secrets.system is known to the attacker

Impact

An attacker can execute arbitrary SQL queries through forged pagination tokens.

Mitigation

As a first line of defense, immediately configure a custom value for secrets.pagination by generating a cryptographically secure random secret, for example:

openssl rand -base64 32

Next, upgrade Hydra to the fixed version as soon as possible.

References

• GHSA-r9w3-57w2-gch2