USN-2327-1: Squid 3 vulnerability

28 August 2014

squid3 vulnerability

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

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


Squid could be made to crash if it received specially crafted network traffic.

Software Description

  • squid3 - Web proxy cache server


Matthew Daley discovered that Squid 3 did not properly perform input validation in request parsing. A remote attacker could send crafted Range requests to cause a denial of service.

Update instructions

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

Ubuntu 14.04 LTS
squid3 - 3.3.8-1ubuntu6.1
Ubuntu 12.04 LTS
squid3 - 3.1.19-1ubuntu3.12.04.3

To update your system, please follow these instructions:

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