[USN-791-2] Moodle vulnerability

From: Kees Cook <kees@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Cc: bugtraq@securityfocus.com,full-disclosure@lists.grok.org.uk
Subject: [USN-791-2] Moodle vulnerability

Ubuntu Security Notice USN-791-2              June 24, 2009
moodle vulnerability

A security issue affects the following Ubuntu releases:

Ubuntu 9.04

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

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

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

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

Details follow:

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)

Updated packages for Ubuntu 9.04:

  Source archives:

      Size/MD5:    37358 a51bee20ca3560c1b390b1e12e42c5f1
      Size/MD5:     1477 a842e53d8330a56f47d09a1c19f78f11
      Size/MD5: 12969234 6263f780d52114c8d6eced8308b66aa7

  Architecture independent packages:

      Size/MD5:  9663672 12cd163fe02d67cda7f972bb5744e3e1

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