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91
Ls Advisories Gentoo Esm H240
Price Tag 1security advisorydenial of servicegentoo

Gentoo: GLSA-200409-04 Normal: Squid Denial Of Service Due To NTLM Auth

Squid is vulnerable to a denial of service attack which could crash its NTLM helpers.. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200409-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Squid: Denial of service when using NTLM authentication Date: September 02, 2004 Bugs: #61280 ID: 200409-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Squid is vulnerable to a denial of service attack which could crash its NTLM helpers. Background ========= 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. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-proxy/squid = 2.5.6-r2 < 2.5 Description ========== 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. Resolution ========= 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" References ========= [ 1 ] Squid-2.5 Patches Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200409-04 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/1.0/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - iD8DBQFBN4JnvcL1obalX08RAmzBAJ0TjVsiwBafbVANOnWhnUtozgjvPACaA7kU 3/zvWQwNNg0LQhlq9sjBRZY=JVl6 -----END PGP SIGNATURE----- . The Gentoo Linux Security Advisory GLSA 200409-04 outlines vulnerabilities in Squid affecting NTLM authentication, suggesting updates and config tweaks for mitigation. Gentoo Linux,Squid Service Disruption,NTLM Authentication Risk. . LinuxSecurity.com Team

Calendar 2 Sep 02, 2004 Gentoo
91
Ls Advisories Gentoo Esm H240
Price Tag 1security advisoryhigh severitygentoo

Gentoo: GLSA-200406-13 High: Squid NTLM Authentication Buffer Overflow

Squid contains a bug where it fails to properly check bounds of the 'pass' variable.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200406-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Squid: NTLM authentication helper buffer overflow Date: June 17, 2004 Bugs: #53367 ID: 200406-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Squid contains a bug where it fails to properly check bounds of the 'pass' variable. Background ========= Squid contains a bug in the function ntlm_check_auth(). It fails to do proper bounds checking on the values copyied to the 'pass' variable. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-www/squid = 2.5.5-r2 Description ========== 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. Impact ===== If Squid is configured to use NTLM authentication, an attacker could exploit this vulnerability by sending a very long password. This could lead to arbitrary code execution with the permissions of the user running Squid. Workaround ========= There is no known workaround at this time. All users are encouraged to upgrade to the latest available version. Resolution ========= All Squid users should upgrade to the latest stable version: # emerge sync # emerge -pv "> =net-www/squid-2.5.5-r2" # emerge ">=net-www/squid-2.5.5-r2" References ========= [ 1 ] CAN-2004-0541 https://www.cve.org/CVERecord?id=CVE-CAN-2004-0541 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200406-13 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2004 Gentoo Technologies, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/1.0/ . Gentoo users must address a critical buffer overflow vulnerability in Squid related to NTLM authentication by verifying Squid version and updating accordingly. squid buffer overflow,gentoo advisory,ntlm authentication fix,high severity security. . LinuxSecurity.com Team

Calendar 2 Jun 17, 2004 Gentoo
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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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