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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-200405-06] libpng denial of service vulnerability Vulnerability Assessment Details
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[GLSA-200405-06] libpng denial of service vulnerability |
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libpng denial of service vulnerability Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200405-06 (libpng denial of service vulnerability) libpng provides two functions (png_chunk_error and png_chunk_warning) for default error and warning messages handling. These functions do not perform proper bounds checking on the provided message, which is limited to 64 bytes. Programs linked against this library may crash when handling a malicious PNG image. Impact This vulnerability could be used to crash various programs using the libpng library, potentially resulting in a denial of service attack on vulnerable daemon processes. Workaround There is no known workaround at this time. All users are advised to upgrade to the latest available version of libpng. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0421 Solution: All users of libpng should upgrade to the latest stable version: # emerge sync # emerge -pv ">=media-libs/libpng-1.2.5-r5" # emerge ">=media-libs/libpng-1.2.5-r5" You should also run revdep-rebuild to rebuild any packages that depend on older versions of libpng : # revdep-rebuild Network Security Threat Level: Medium Networks Security ID: Vulnerability Assessment Copyright: (C) 2005 Michel Arboi |
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