USN-3825-1: mod_perl vulnerability

21 November 2018

libapache2-mod-perl2 vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


mod_perl could be made to run programs contrary to expectations.

Software Description

  • libapache2-mod-perl2 - Integration of perl with the Apache2 web server


Jan Ingvoldstad discovered that mod_perl incorrectly handled configuration options to disable being used by unprivileged users, contrary to the documentation. A local attacker could possibly use this issue to execute arbitrary Perl code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10
libapache2-mod-perl2 - 2.0.10-2ubuntu3.18.10.1
Ubuntu 18.04 LTS
libapache2-mod-perl2 - 2.0.10-2ubuntu3.18.04.1
Ubuntu 16.04 LTS
libapache2-mod-perl2 - 2.0.9-4ubuntu1.2
Ubuntu 14.04 LTS
libapache2-mod-perl2 - 2.0.8+httpd24-r1449661-6ubuntu2.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.