Published: 25 February 2020

OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.



CVSS 3 base score: 4.7


Package Release Status
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.10 (Impish Indri)
Released (6.6.4p1-1)
Ubuntu 21.04 (Hirsute Hippo)
Released (6.6.4p1-1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (6.6.4p1-1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (6.0.3p1-1ubuntu0.2)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end of standard support, was needed)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

This vulnerability is mitigated in part by the use of hardlink restrictions in Ubuntu.