USN-1713-1: Squid vulnerabilities

Releases

• Ubuntu 12.10
• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 10.04

Packages

• squid - Internet object cache (WWW proxy cache)
• squid3 - Full featured Web Proxy cache (HTTP proxy)

Details

It was discovered that squid's cachemgr.cgi was vulnerable to excessive
resource use. A remote attacker could exploit this flaw to perform a denial
of service attack on the server and other hosted services. (CVE-2012-5643)

It was discovered that the patch for CVE-2012-5643 was incorrect. A
remote attacker could exploit this flaw to perform a denial of service
attack. (CVE-2013-0189)

Update instructions

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

Ubuntu 12.10

• squid-cgi - 3.1.20-1ubuntu1.1

Ubuntu 12.04

• squid-cgi - 3.1.19-1ubuntu3.12.04.2

Ubuntu 11.10

• squid-cgi - 3.1.14-1ubuntu0.3

Ubuntu 10.04

• squid-cgi - 2.7.STABLE7-1ubuntu12.6

In general, a standard system update will make all the necessary changes.
Ensure the webserver access controls properly restrict access to cachemgr.cgi.

References

• CVE-2012-5643
• CVE-2013-0189