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Family: Debian Local Security Checks --> Category: infos
[DSA066] DSA-066-1 cfingerd Vulnerability Scan
Vulnerability Scan Summary
DSA-066-1 cfingerd
Detailed Explanation for this Vulnerability Test
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
Threat Level: High
Click HERE for more information and discussions on this network vulnerability scan.
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