Vulnerability CVE-2023-27582
Published: 2023-03-13   Modified: 2023-03-14

Description:
maddy is a composable, all-in-one mail server. Starting with version 0.2.0 and prior to version 0.6.3, maddy allows a full authentication bypass if SASL authorization username is specified when using the PLAIN authentication mechanisms. Instead of validating the specified username, it is accepted as is after checking the credentials for the authentication username. maddy 0.6.3 includes the fix for the bug. There are no known workarounds.

Type:

CWE-287

 (Improper Authentication)

 References:
https://github.com/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6w
https://github.com/foxcpp/maddy/releases/tag/v0.6.3
https://github.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399a
https://github.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9c
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