Vulnerability Note VU#823350

Squid fails to properly handle oversized reply headers

Overview

The Squid web proxy cache may be vulnerable to oversized HTTP reply headers.

I. Description

Squid functions as a web proxy and cache application for a number of protocols, including the hypertext transfer protocol (HTTP). A defect in the Squid HTTP handling prevents oversized reply headers relating to an HTTP protocol mismatch from being handled properly.

II. Impact

The complete impact of this vulnerability is not yet known. This vulnerability is platform independent.

III. Solution

Apply an update

Administrators should obtain an updated version of Squid from their vendor.

Team Squid has created a patch for the current release version of Squid: squid-2.5.STABLE7-oversize_reply_headers.patch

This flaw has been patched in Squid 2.5.STABLE8-RC4. More details are available in the Squid Bugzilla bug #1216.

Systems Affected

Vendor	Status	Date Notified	Date Updated
Squid	Vulnerable	4-Feb-2005

References

http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-oversize_reply_headers
http://www.squid-cache.org/bugs/show_bug.cgi?id=1216
http://secunia.com/advisories/14091/

Credit

Thanks to Team Squid for reporting this vulnerability, who in turn credit Marc Elsen for finding the flaw.

This document was written by Ken MacInnis based primarily on information provided by Team Squid.

Other Information

Date Public:	2005-01-31
Date First Published:	2005-02-04
Date Last Updated:	2005-02-07
CERT Advisory:
CVE-ID(s):
NVD-ID(s):
US-CERT Technical Alerts:
Metric:	1.20
Document Revision:	17

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