CVE-2021-29157

Published: 21 June 2021

Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location. This occurs during use of local JWT validation with the posix fs driver.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
dovecot
Launchpad, Ubuntu, Debian
Upstream
Released (2.3.14.1)
Ubuntu 21.10 (Impish Indri)
Released (2.3.13+dfsg1-1ubuntu2)
Ubuntu 21.04 (Hirsute Hippo)
Released (1:2.3.13+dfsg1-1ubuntu1.1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(code not present)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(code not present)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable
(code not present)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(code not present)