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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-200507-20] Shorewall: Security policy bypass Vulnerability Assessment Details
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[GLSA-200507-20] Shorewall: Security policy bypass |
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Shorewall: Security policy bypass Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200507-20 (Shorewall: Security policy bypass) Shorewall fails to enforce security policies if configured with "MACLIST_DISPOSITION" set to "ACCEPT" or "MACLIST_TTL" set to a value greater or equal to 0. Impact A client authenticated by MAC address filtering could bypass all security policies, possibly permiting him to gain access to restricted services. Workaround Set "MACLIST_TTL" to "0" and "MACLIST_DISPOSITION" to "REJECT" in the Shorewall configuration file (usually /etc/shorewall/shorewall.conf). References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2317 http://www.shorewall.net/News.htm#20050717 Solution: All Shorewall users should upgrade to the latest available version: # emerge --sync # emerge --ask --oneshot --verbose net-firewall/shorewall Network Security Threat Level: Low Networks Security ID: Vulnerability Assessment Copyright: (C) 2005 Michel Arboi |
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Home Networking, Cable & DSL |
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