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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 >> Debian Local Security Checks >> [DSA140] DSA-140-2 libpng Vulnerability Assessment Details
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[DSA140] DSA-140-2 libpng |
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DSA-140-2 libpng Detailed Explanation for this Vulnerability Assessment Developers of the PNG library have fixed a buffer overflow in the progressive reader when the PNG datastream contains more IDAT data than indicated by the IHDR chunk. Such deliberately malformed datastreams would crash applications which could potentially permit an attacker to execute malicious code. Programs such as Galeon, Konqueror and various others make use of these libraries. In addition to that, the packages below fix another potential buffer overflow. The PNG libraries implement a safety margin which is also included in a newer upstream release. Thanks to Glenn Randers-Pehrson for informing us. To find out which packages depend on this library, you may want to execute the following commands: apt-cache showpkg libpng2 apt-cache showpkg libpng3 This problem has been fixed in version 1.0.12-3.woody.2 of libpng and version 1.2.1-1.1.woody.2 of libpng3 for the current stable distribution (woody) and in version 1.0.12-4 of libpng and version 1.2.1-2 of libpng3 for the unstable distribution (sid). The potato release of Debian does not seem to be vulnerable. We recommend that you upgrade your libpng packages immediately and restart programs and daemons that link to these libraries and read external data, such as web browsers. Solution : http://www.debian.org/security/2002/dsa-140 Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi |
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Workstations, Terminals |
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