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Squid Proxy Cache Security Update Advisory SQUID-2013:3
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Advisory ID: SQUID-2013:3
Date: July 13, 2013
Summary: Denial of service in request processing
Affected versions: Squid 3.2 -> 3.2.12,
Squid 3.3 -> 3.3.7
Fixed in version: Squid 3.2.13, 3.3.8
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http://www.squid-cache.org/Advisories/SQUID-2013_3.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4123
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Problem Description:
Due to incorrect data validation Squid is vulnerable to a denial
of service attack when processing specially crafted HTTP requests
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Severity:
This problem allows any client who can generate HTTP requests to
perform a denial of service attack on the Squid service.
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Updated Packages:
This bug is fixed by Squid versions 3.2.13 and 3.3.8.
In addition, patches addressing this problem can be found in
our patch archives.
Squid 3.2:
http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch
Squid 3.3:
http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch
If you are using a prepackaged version of Squid then please refer
to the package vendor for availability information on updated
packages.
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Determining if your version is vulnerable:
All Squid-3.1 and older versions, including Squid-2 are not
vulnerable.
All unpatched Squid-3.2 versions up to and including 3.2.12 are
vulnerable.
All unpatched Squid-3.3 versions up to and including 3.3.7 are
vulnerable.
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Workarounds:
There are no workarounds for this issue.
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Contact details for the Squid project:
For installation / upgrade support on binary packaged versions
of Squid: Your first point of contact should be your binary
package vendor.
If your install and build Squid from the original Squid sources
then the squid-users@xxxxxxxxxxxxxxx mailing list is your primary
support point. For subscription details see
<http://www.squid-cache.org/Support/mailing-lists.html>.
For reporting of non-security bugs in the latest STABLE release
the squid bugzilla database should be used
<http://bugs.squid-cache.org/>.
For reporting of security sensitive bugs send an email to the
squid-bugs@xxxxxxxxxxxxxxx mailing list. It's a closed list
(though anyone can post) and security related bug reports are
treated in confidence until the impact has been established.
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Credits:
The vulnerability was reported by Saran Neti, TELUS Security Labs
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Revision history:
2013-07-12 18:46 GMT Initial Report
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