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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-200702-06] BIND: Denial of Service Vulnerability Assessment Details
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[GLSA-200702-06] BIND: Denial of Service |
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BIND: Denial of Service Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200702-06 (BIND: Denial of Service) An unspecified improper usage of an already freed context has been reported. Additionally, an assertion error could be triggered in the DNSSEC validation of some responses to type ANY queries with multiple RRsets. Impact A remote attacker could crash the server through unspecified vectors or, if DNSSEC validation is enabled, by sending certain crafted ANY queries. Workaround There is no known workaround at this time for the first issue. The DNSSEC validation Denial of Service can be prevented by disabling DNSSEC validation until the upgrade to a fixed version. Note that DNSSEC validation is disabled on a default configuration. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0493 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-CVE-2007-0494 Solution: All ISC BIND 9.3 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/bind-9.3.4" All ISC BIND 9.2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-dns/bind-9.2.8" Network Security Threat Level: Medium Networks Security ID: Vulnerability Assessment Copyright: (C) 2007 Michel Arboi |
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Filers, Load Balancers |
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