USN-2921-1: Squid vulnerabilities

Ubuntu Security Notice USN-2921-1

7th 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 version:

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

CVE-2014-6270, CVE-2016-2571