Squid 3.2.x < 3.2.13 / 3.3.x < 3.3.8 Port Handling DoS

This script is Copyright (C) 2013-2014 Tenable Network Security, Inc.


Synopsis :

The remote proxy server is affected by a denial of service
vulnerability.

Description :

According to its banner, the version of Squid running on the remote
host is 3.2.x prior to 3.2.13 or 3.3.x prior to 3.3.8. It is,
therefore, affected by a denial of service vulnerability. The
vulnerability exists when handling a port number in the host header of a
specially crafted HTTP Request.

Note that Nessus has relied only on the version in the proxy server's
banner, which is not updated by the patch that the project has released
to address this issue. If this patch has been applied properly and the
service has been restarted, consider this to be a false positive.

See also :

http://www.squid-cache.org/Advisories/SQUID-2013_3.txt
http://seclists.org/bugtraq/2013/Jul/98

Solution :

Either upgrade to Squid version 3.2.13 / 3.3.8 or later, or apply the
vendor-supplied patch.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Firewalls

Nessus Plugin ID: 69042 ()

Bugtraq ID: 61159
61182

CVE ID: CVE-2013-4123