USN-2921-1: Squid vulnerabilities

7 March 2016

squid3 vulnerabilities

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

  • Ubuntu 15.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in Squid.

Software Description

  • squid3 - Web proxy cache server

Details

Sebastian Krahmer discovered that Squid incorrectly handled certain SNMP requests. If SNMP is enabled, a remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-6270)

Alex Rousskov discovered that Squid incorrectly handled certain malformed responses. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. (CVE-2016-2571)

Update instructions

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

Ubuntu 15.10
squid3 - 3.3.8-1ubuntu16.2
Ubuntu 14.04 LTS
squid3 - 3.3.8-1ubuntu6.6
Ubuntu 12.04 LTS
squid3 - 3.1.19-1ubuntu3.12.04.6

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