USN-2340-1: procmail vulnerability

4 September 2014

procmail vulnerability

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

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS

Summary

formail could be made to crash or run programs if it processed specially crafted mail.

Software Description

  • procmail - Versatile e-mail processor

Details

Tavis Ormandy discovered that the formail tool incorrectly handled certain malformed mail headers. An attacker could use this flaw to cause formail to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 14.04 LTS
procmail - 3.22-21ubuntu0.1
Ubuntu 12.04 LTS
procmail - 3.22-19ubuntu0.1
Ubuntu 10.04 LTS
procmail - 3.22-18ubuntu1.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References