GHSA-4g76-w3xw-2x6w

Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-4g76-w3xw-2x6w/GHSA-4g76-w3xw-2x6w.json

Aliases

• CVE-2023-27582

Published

2023-03-14T18:03:22Z

Modified

2023-03-14T18:03:22Z

Details

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

References

• 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
• https://github.com/foxcpp/maddy/releases/tag/v0.6.3