by Kastro
Paper/Archive/CVE-2023-27582

CVE-2023-27582

foxcpp maddy — Full authentication bypass if SASL authorization username is specified

EPSS 1%CVSS 9.8
critical.is priorityof 100
42
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 63.4.634 × 2012.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
maddy>= 0.2.0 0.6.3–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/foxcpp/maddy/security/advisories/GHSA-4g76-w3xw-2x6wrefgithub.com/foxcpp/maddy/commit/55a91a37b71210f34f98f4d327c30308fe24399arefgithub.com/foxcpp/maddy/commit/9f58cb64b39cdc01928ec463bdb198c4c2313a9crefgithub.com/foxcpp/maddy/releases/tag/v0.6.3