Nessus Plugin #14651

Plugin Index

Note: This file has been created from a downloaded version of the Nessus Plugins from http://www.nessus.org/. Therefore, the information here can be outdated.

[GLSA-200409-04] Squid: Denial of service when using NTLM authentication

Family:

Gentoo Local Security Checks

Category:

infos

Copyright:

(C) 2004 Michel Arboi

Summary:

Squid: Denial of service when using NTLM authentication

Version:

$Revision: 1.2 $

Cve_id:

-

Bugtraq_id:

11098

Xrefs:

GLSA:200409-04

Description:

The remote host is affected by the vulnerability described in GLSA-200409-04
(Squid: Denial of service when using NTLM authentication)


Squid 2.5.x versions contain a bug in the functions ntlm_fetch_string() and
ntlm_get_string() which lack checking the int32_t offset "o" for
negative values.

Impact

A remote attacker could cause a denial of service situation by sending
certain malformed NTLMSSP packets if NTLM authentication is enabled.

Workaround

Disable NTLM authentication by removing any "auth_param ntlm program
..." directives from squid.conf or use ntlm_auth from Samba-3.x.

References:
http://www1.uk.squid-cache.org/squid/Versions/v2/2.5/bugs/#squid-2.5.STABLE6-ntlm_fetch_string


Solution:
All Squid users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-www/squid-2.5.6-r2"
# emerge ">=net-www/squid-2.5.6-r2"


Risk Factor : Medium