RHEL 4 : squid (RHSA-2005:060)

This script is Copyright (C) 2005-2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing a security update.

Description :

An updated Squid package that fixes several security issues is now
available.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

Squid is a full-featured Web proxy cache.

A buffer overflow flaw was found in the Gopher relay parser. This bug
could allow a remote Gopher server to crash the Squid proxy that reads
data from it. Although Gopher servers are now quite rare, a malicious
webpage (for example) could redirect or contain a frame pointing to an
attacker's malicious gopher server. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CVE-2005-0094
to this issue.

An integer overflow flaw was found in the WCCP message parser. It is
possible to crash the Squid server if an attacker is able to send a
malformed WCCP message with a spoofed source address matching Squid's
'home router'. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CVE-2005-0095 to this issue.

A memory leak was found in the NTLM fakeauth_auth helper. It is
possible that an attacker could place the Squid server under high
load, causing the NTML fakeauth_auth helper to consume a large amount
of memory, resulting in a denial of service. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2005-0096 to this issue.

A NULL pointer de-reference bug was found in the NTLM fakeauth_auth
helper. It is possible for an attacker to send a malformed NTLM type 3
message, causing the Squid server to crash. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned the name
CVE-2005-0097 to this issue.

A username validation bug was found in squid_ldap_auth. It is possible
for a username to be padded with spaces, which could allow a user to
bypass explicit access control rules or confuse accounting. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2005-0173 to this issue.

The way Squid handles HTTP responses was found to need strengthening.
It is possible that a malicious Web server could send a series of HTTP
responses in such a way that the Squid cache could be poisoned,
presenting users with incorrect webpages. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned the names
CVE-2005-0174 and CVE-2005-0175 to these issues.

A bug was found in the way Squid handled oversized HTTP response
headers. It is possible that a malicious Web server could send a
specially crafted HTTP header which could cause the Squid cache to be
poisoned, presenting users with incorrect webpages. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2005-0241 to this issue.

A buffer overflow bug was found in the WCCP message parser. It is
possible that an attacker could send a malformed WCCP message which
could crash the Squid server or execute arbitrary code. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-2005-0211 to this issue.

Users of Squid should upgrade to this updated package, which contains
backported patches, and is not vulnerable to these issues.

See also :

https://www.redhat.com/security/data/cve/CVE-2005-0094.html
https://www.redhat.com/security/data/cve/CVE-2005-0095.html
https://www.redhat.com/security/data/cve/CVE-2005-0096.html
https://www.redhat.com/security/data/cve/CVE-2005-0097.html
https://www.redhat.com/security/data/cve/CVE-2005-0173.html
https://www.redhat.com/security/data/cve/CVE-2005-0174.html
https://www.redhat.com/security/data/cve/CVE-2005-0175.html
https://www.redhat.com/security/data/cve/CVE-2005-0211.html
https://www.redhat.com/security/data/cve/CVE-2005-0241.html
http://www.squid-cache.org/Advisories/SQUID-2005_1.txt
http://www.squid-cache.org/Advisories/SQUID-2005_2.txt
http://www.squid-cache.org/Advisories/SQUID-2005_3.txt
http://www.squid-cache.org/Versions/v2/2.5/bugs/#
http://www.nessus.org/u?96864d1c
http://rhn.redhat.com/errata/RHSA-2005-060.html

Solution :

Update the affected squid package.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)

Family: Red Hat Local Security Checks

Nessus Plugin ID: 17176 ()

Bugtraq ID:

CVE ID: CVE-2005-0094
CVE-2005-0095
CVE-2005-0096
CVE-2005-0097
CVE-2005-0173
CVE-2005-0174
CVE-2005-0175
CVE-2005-0211
CVE-2005-0241