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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-200703-03] ClamAV: Denial of Service Vulnerability Assessment Details
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[GLSA-200703-03] ClamAV: Denial of Service |
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ClamAV: Denial of Service Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200703-03 (ClamAV: Denial of Service) An anonymous researcher discovered a file descriptor leak error in the processing of CAB archives and a lack of validation of the "id" parameter string used to create local files when parsing MIME headers. Impact A remote attacker can send several crafted CAB archives with a zero-length record header that will fill the available file descriptors until no other is available, which will prevent ClamAV from scanning most archives. A possible hacker can also send an email with specially crafted MIME headers to overwrite local files with the permissions of the user running ClamAV, such as the virus database file, which could prevent ClamAV from detecting any virus. Workaround The first vulnerability can be prevented by refusing any file of type CAB, but there is no known workaround for the second issue. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0897 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0898 Solution: All ClamAV users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.90" Network Security Threat Level: Medium Networks Security ID: Vulnerability Assessment Copyright: (C) 2007 Michel Arboi |
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Network Interface Cards, NICs |
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