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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 >> [DSA056] DSA-056-1 man-db Vulnerability Assessment Details
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[DSA056] DSA-056-1 man-db |
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DSA-056-1 man-db Detailed Explanation for this Vulnerability Assessment Ethan Benson found a bug in man-db packages as distributed in Debian GNU/Linux 2.2. man-db includes a mandb tool which is used to build an index of the manual pages installed on a system. When the -u or -c option were given on the command-line to tell it to write its database to a different location it failed to properly drop rights before creating a temporary file. This makes it possible for a possible hacker to do a standard symlink attack to trick mandb into overwriting any file that is writable by uid man, which includes the man and mandb binaries. This has been fixed in version 2.3.16-3, and we recommend that you upgrade your man-db package immediately. If you use suidmanager you can also use that to make sure man and mandb are not installed suid which protects you from this problem. This can be done with the following commands: suidregister /usr/lib/man-db/man root root 0755 suidregister /usr/lib/man-db/mandb root root 0755 Of course even when using suidmanager an upgrade is still strongly recommended. Solution : http://www.debian.org/security/2001/dsa-056 Network Security Threat Level: High Networks Security ID: 2720 Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi |
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