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Squid: Denial of Service vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200509-06 / Squid
Release Date September 07, 2005
Latest Revision May 22, 2006: 03
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-proxy/squid < 2.5.10-r2 >= 2.5.10-r2 All supported architectures

Related bugreports: #104603


Squid contains several bugs when handling certain malformed requests resulting in a Denial of Service.

2.  Impact Information


Squid is a full-featured Web proxy cache designed to run on Unix-like systems. It supports proxying and caching of HTTP, FTP, and other protocols, as well as SSL support, cache hierarchies, transparent caching, access control lists and many more features.


Certain malformed requests result in a segmentation fault in the sslConnectTimeout function, handling of other certain requests trigger assertion failures.


By performing malformed requests an attacker could cause Squid to crash by triggering an assertion failure or invalid memory reference.

3.  Resolution Information


There is no known workaround at this time.


All Squid users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-proxy/squid-2.5.10-r2"

4.  References


Page updated September 07, 2005

Summary: This is a Gentoo Linux Security Advisory

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