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CVE-2020-1946

Published: 31 December 2020

In Apache SpamAssassin before 3.4.5, malicious rule configuration (.cf) files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA version 3.4.5, users should only use update channels or 3rd party .cf files from trusted places.

Notes

AuthorNote
sbeattie
command injection in configuration parsing

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
spamassassin
Launchpad, Ubuntu, Debian
groovy Not vulnerable
(3.4.5~pre1-3)
upstream
Released (3.4.5,3.4.5~pre1)
bionic
Released (3.4.2-0ubuntu0.18.04.5)
focal
Released (3.4.4-1ubuntu1.1)
xenial
Released (3.4.2-0ubuntu0.16.04.5)
trusty
Released (3.4.2-0ubuntu0.14.04.1+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Patches:
upstream: https://svn.apache.org/viewvc/spamassassin/branches/3.4/lib/Mail/SpamAssassin/Conf/Parser.pm?r1=1864416&r2=1876381&pathrev=1876381
upstream: https://github.com/apache/spamassassin/commit/2bffc7753d234995022f1f44ace4585241165925

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H