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Home >> Browse Vulnerability Assessment Database >> Debian Local Security Checks >> [DSA066] DSA-066-1 cfingerd


Vulnerability Assessment Details

[DSA066] DSA-066-1 cfingerd

Vulnerability Assessment Summary
DSA-066-1 cfingerd

Detailed Explanation for this Vulnerability Assessment

Steven van Acker reported on bugtraq that the version of cfingerd (a
configurable finger daemon) as distributed in Debian GNU/Linux 2.2
suffers from two problems:


The code that reads configuration files (files in which $ commands are
expanded) copied its input to a buffer without checking for a buffer
overflow. When the ALLOW_LINE_PARSING feature is enabled that code
is used for reading users' files as well, so local users could exploit
this.

There also was a printf call in the same routine that did not protect
against printf format attacks.


Since ALLOW_LINE_PARSING is enabled in the default /etc/cfingerd.conf
local users could use this to gain root access.

This has been fixed in version 1.4.1-1.2, and we recommend that you upgrade
your cfingerd package immediately.



Solution : http://www.debian.org/security/2001/dsa-066
Network Security Threat Level: High

Networks Security ID: 2914, 2915

Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi

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