USN-791-2: Moodle vulnerability

24 June 2009

moodle vulnerability

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

  • Ubuntu 9.04

Software Description

  • moodle


Christian Eibl discovered that the TeX filter in Moodle allowed any function to be used. An authenticated remote attacker could post a specially crafted TeX formula to execute arbitrary TeX functions, potentially reading any file accessible to the web server user, leading to a loss of privacy. (CVE-2009-1171, MSA-09-0009)

Update instructions

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

Ubuntu 9.04
moodle - 1.9.4.dfsg-0ubuntu1.1

To update your system, please follow these instructions:

After a standard system upgrade you need to access the Moodle instance and accept the database update to clear any invalid cached data.