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Vulnerability Assessment & Network Security Forums |
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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
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[GLSA-200409-04] Squid: Denial of service when using NTLM authentication |
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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 |
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