critical9.1
CVE-2023-27582
Full authentication bypass if SASL authorization username is specified
Impact
### 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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/foxcpp/maddy | >= 0.2.0, < 0.6.3 | 0.6.3 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Maddy Project | Maddy | from 0.2.0 before 0.6.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6w
- https://github.com/advisories/GHSA-4g76-w3xw-2x6w
- https://nvd.nist.gov/vuln/detail/CVE-2023-27582