procmail vulnerability

Related Vulnerabilities: CVE-2017-16844  

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

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

20 November 2017

procmail vulnerability

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

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 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

Jakub Wilk discovered that the formail tool incorrectly handled certain malformed mail messages. 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 17.10
procmail - 3.22-25ubuntu0.17.10.1
Ubuntu 17.04
procmail - 3.22-25ubuntu0.17.04.1
Ubuntu 16.04 LTS
procmail - 3.22-25ubuntu0.16.04.1
Ubuntu 14.04 LTS
procmail - 3.22-21ubuntu0.2

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