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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Check for the version of the squid packages
Detailed Explanation for this Vulnerability Assessment
An updated squid package that fixes a security vulnerability as well as
several issues is now available.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.
A denial of service flaw was found in the way squid processes certain NTLM
authentication requests. It is possible for a remote attacker to crash the
Squid server by sending a specially crafted NTLM authentication request.
The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned
the name CVE-2005-2917 to this issue.
The following issues have also been fixed in this update:
* An error introduced in squid-2.5.STABLE6-3.4E.12 can crash Squid when a
user visits a site that has a bit longer DNS record.
* An error introduced in the old package prevented Squid from returning
correct information about large file systems. The new package is compiled
with the IDENT lookup support so that users who want to use it do not
have to recompile it.
* Some authentication helpers needed SETUID rights but did not have them.
If administrators wanted to use cache administrator, they had to change
the SETUID bit manually. The updated package sets this bit so the new
package can be updated without manual intervention from administrators.
* Squid could not handle a reply from an HTTP server when the reply began
with the new-line character.
* An issue was discovered when a reply from an HTTP server was not
HTTP 1.0 or 1.1 compliant.
* The updated package keeps user-defined error pages when the package
is updated and it adds new ones.
All users of squid should upgrade to this updated package, which resolves
Solution : http://rhn.redhat.com/errata/RHSA-2006-0052.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2006 Tenable Network Security
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