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TITLE:
Squid HTTP Version Number Parsing Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA33731

VERIFY ADVISORY:
http://secunia.com/advisories/33731/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Squid 2.x
http://secunia.com/advisories/product/310/
Squid 3.x
http://secunia.com/advisories/product/19194/

DESCRIPTION:
A vulnerability has been reported in Squid, which can be exploited by
malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error when processing malformed
HTTP version numbers, which e.g. can be exploited by a client by
sending specially crafted requests to a vulnerable server.

The vulnerability is reported in version 2.7 through 2.7.STABLE5, 3.0
through 3.0.STABLE12, and 3.1 through 3.1.0.4.

SOLUTION:
Update to version 2.7.STABLE6, 3.0.STABLE13, 3.1.0.5 or apply
patches.

-- Patches --

Squid 2.7:
http://www.squid-cache.org/Versions/v2/2.7/changesets/12432.patch
http://www.squid-cache.org/Versions/v2/2.7/changesets/12442.patch

Squid 3.0:
http://www.squid-cache.org/Versions/v3/3.0/changesets/b8964.patch
http://www.squid-cache.org/Versions/v3/3.0/changesets/b8965.patch

Squid 3.1:
http://www.squid-cache.org/Versions/v3/3.1/changesets/b9414.patch
http://www.squid-cache.org/Versions/v3/3.1/changesets/b9418.patch

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Joshua Morin, Mikko Varpiola, and Jukka Taimisto
from the CROSS project at Codenomicon Ltd.

ORIGINAL ADVISORY:
http://www.squid-cache.org/Advisories/SQUID-2009_1.txt

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