Cacti "graph_image.php" Denial of Service
Secunia Advisory: SA25557
Release Date: 2007-06-06
Last Update: 2007-06-11
Popularity: 6,084 views

Critical:
Less critical
Impact: DoS
Where: From remote
Solution Status: Vendor Workaround

Software:Cacti 0.x

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CVE reference:CVE-2007-3112
CVE-2007-3113


Description:
A vulnerability has been discovered in Cacti, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error in graph_image.php, which can be exploited to use lots of system resources by passing malicious values to the "graph_start", "graph_end", "graph_width", and "graph_height" parameters.

The vulnerability is confirmed in version 0.8.6j. Other versions may also be affected.

Solution:
Apply the vendor's official fix:
http://svn.cacti.net/cgi-bin/viewcvs.....php?rev=3956&r1=3898&r2=3956

Provided and/or discovered by:
Mathieu Dessus and the vendor

Changelog:
2007-06-11: Added CVE reference.

Original Advisory:
http://mdessus.free.fr/?p=15


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