Full authentication bypass if SASL authorization username is specified

NGHIÊM TRỌNG 9.8CVE-2023-27582 · GHSA-4g76-w3xw-2x6w · GO-2023-1630 · Công bố 13/03/2023 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2023-27582 là lỗ hổng mức NGHIÊM TRỌNG (CVSS 9.8) ảnh hưởng github.com/foxcpp/maddy, maddy (maddy project).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 1.0%, cao hơn 63.5% các lỗ hổng khác.
Cách xử lý: cập nhật lên 0.6.3 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
github.com/foxcpp/maddy Go	`≥ 0.2.0, < 0.6.3`	`0.6.3`
maddy maddy_project	`≥ 0.2.0, < 0.6.3`	`0.6.3`

Mô tả

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

Mô tả của NVD

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.