Joined: 25 Feb 2003
Location: Essen, Germany
|Posted: Thu Sep 02, 2004 9:13 pm Post subject: [ GLSA 200409-04 ] Squid: Denial of service when using NTLM
|Gentoo Linux Security Advisory
Title: Squid: Denial of service when using NTLM authentication (GLSA 200409-04)
Date: September 02, 2004
Updated: December 30, 2007
Squid is vulnerable to a denial of service attack which could crash its
Squid is a full-featured Web Proxy Cache designed to run on Unix
systems. It supports proxying and caching of HTTP, FTP, and other URLs,
as well as SSL support, cache hierarchies, transparent caching, access
control lists and many other features.
Vulnerable: <= 2.5.6-r1
Unaffected: >= 2.5.6-r2
Unaffected: < 2.5
Architectures: All supported architectures
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
A remote attacker could cause a denial of service situation by sending
certain malformed NTLMSSP packets if NTLM authentication is enabled.
Disable NTLM authentication by removing any "auth_param ntlm program
..." directives from squid.conf or use ntlm_auth from Samba-3.x.
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"
Last edited by GLSA on Wed Feb 12, 2014 4:17 am; edited 5 times in total