GHSA-4g76-w3xw-2x6wCriticalCVSS 9.1
Full authentication bypass if SASL authorization username is specified
🔗 CVE IDs covered (1)
📋 Description
Impact
maddy 0.2.0 - 0.6.2 allows a full authentication bypass if SASL authorization username is specified when using the PLAIN authentication mechanisms. Instead of validating the specified authorization username, it is accepted as is after checking the credentials for the authentication username.
Patches
maddy 0.6.3 includes the fix for the bug.
Workarounds
There is no way to fix the issue without upgrading.
References
- Commit that introduced the vulnerable code: https://github.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399a
- Fix: https://github.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9c
🎯 Affected products1
- go/github.com/foxcpp/maddy:>= 0.2.0, < 0.6.3
🔗 References (6)
- https://github.com/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6w
- https://nvd.nist.gov/vuln/detail/CVE-2023-27582
- https://github.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399a
- https://github.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9c
- https://github.com/foxcpp/maddy/releases/tag/v0.6.3
- https://github.com/advisories/GHSA-4g76-w3xw-2x6w