CVE-2020-28021

Published: 04 May 2021

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool file (which indirectly leads to remote code execution as root) via AUTH= in a MAIL FROM command.

Priority

Medium

CVSS 3 base score: 8.8

Status

Package Release Status
exim4
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.04 (Hirsute Hippo)
Released (4.94-15ubuntu1.2)
Ubuntu 20.10 (Groovy Gorilla)
Released (4.94-7ubuntu1.2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (4.93-13ubuntu1.5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.90.1-1ubuntu1.8)
Ubuntu 16.04 ESM (Xenial Xerus) Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Needs triage