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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-200701-01] DenyHosts: Denial of Service Vulnerability Assessment Details
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[GLSA-200701-01] DenyHosts: Denial of Service |
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DenyHosts: Denial of Service Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200701-01 (DenyHosts: Denial of Service) Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that DenyHosts used an incomplete regular expression to parse failed login attempts. Impact A remote unauthenticated attacker can add arbitrary hosts to the blacklist by attempting to login with a specially crafted username. An attacker may use this to prevent legitimate users from accessing a host remotely. Workaround There is no known workaround at this time. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6301 Solution: All DenyHosts users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-admin/denyhosts-2.6" Network Security Threat Level: Medium Networks Security ID: Vulnerability Assessment Copyright: (C) 2007 Michel Arboi |
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