Nessus Plugin #16416

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[GLSA-200501-25] Squid: Multiple vulnerabilities

Family:

Gentoo Local Security Checks

Category:

infos

Copyright:

(C) 2005 Michel Arboi

Summary:

Squid: Multiple vulnerabilities

Version:

$Revision: 1.1 $

Cve_id:

CAN-2005-0094, CAN-2005-0095, CAN-2005-0096, CAN-2005-0097, CAN-2005-0194

Bugtraq_id:

-

Xrefs:

GLSA:200501-25

Description:

The remote host is affected by the vulnerability described in GLSA-200501-25
(Squid: Multiple vulnerabilities)


Squid contains a vulnerability in the gopherToHTML function
(CAN-2005-0094) and incorrectly checks the 'number of caches' field
when parsing WCCP_I_SEE_YOU messages (CAN-2005-0095). Furthermore the
NTLM code contains two errors. One is a memory leak in the
fakeauth_auth helper (CAN-2005-0096) and the other is a NULL pointer
dereferencing error (CAN-2005-0097). Finally Squid also contains an
error in the ACL parsing code (CAN-2005-0194).

Impact

With the WCCP issue an attacker could cause denial of service by
sending a specially crafted UDP packet. With the Gopher issue an
attacker might be able to execute arbitrary code by enticing a user to
connect to a malicious Gopher server. The NTLM issues could lead to
denial of service by memory consumption or by crashing Squid. The ACL
issue could lead to ACL bypass.

Workaround

There is no known workaround at this time.

References:
http://secunia.com/advisories/13825/
http://secunia.com/advisories/13789/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0094
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0095
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0096
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0097
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0194


Solution:
All Squid users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-proxy/squid-2.5.7-r2"


Risk factor : Medium