Vulnerability Assessment & Network Security Forums



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.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200409-04] Squid: Denial of service when using NTLM authentication


Vulnerability Assessment Details

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

Vulnerability Assessment Summary
Squid: Denial of service when using NTLM authentication

Detailed Explanation for this Vulnerability Assessment
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"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

Cables, Connectors

NextBook Flexx 11, Laptop w/ Win 10 + Intel Atom Z3735F CPU @ 1.33 Ghz, 2 GB Ram
$49.99
NextBook Flexx 11, Laptop w/ Win 10 + Intel Atom Z3735F CPU @ 1.33 Ghz, 2 GB Ram pictureIBM 69Y1811 Server Motherboard Single Socket LGA1567 - NO CPU RAM
$149.95
IBM 69Y1811 Server Motherboard Single Socket LGA1567 - NO CPU RAM pictureMagideal RGB Cooled Fan CPU Cooler Heatsink for Intel Socket LGA1156,1155
$9.12
Magideal RGB Cooled Fan CPU Cooler Heatsink for Intel Socket LGA1156,1155 pictureMagideal Cooled Fan Extrusion CPU Cooler Heatsink for Intel Socket 1150
$8.24
Magideal Cooled Fan Extrusion CPU Cooler Heatsink for Intel Socket 1150 picture


Discussions

No Discussions have been posted on this vulnerability.