|Check Point Reference:||CPAI-2013-033|
|Date Published:||20 Feb 2013|
|Protection Provided by:||
|Who is Vulnerable?||Microsoft .NET Framework 4 and prior|
|Vulnerability Description||A denial of service vulnerability has been reported in Microsoft ASP.NET and PHP. Successful exploitation could degrade performance significantly, possibly resulting in a denial of service condition.|
|Update/Patch Avaliable||Apply patches from: MS11-100|
|Vulnerability Details||The vulnerability is caused due to the way common web framework implementations use hash tables to map parameters and values of web requests. A remote attacker may exploit this vulnerability by generating multiple requests containing colliding key values to an affected server.|
IPS will detect and block the transferring of malicious requests to the server.
In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, Protection tab and select the version of your choice.
SmartView Tracker will log the following entries:
Attack Name: Web Server Enforcement Violation
Attack Information: Microsoft ASP.NET and PHP Hash Collision Denial of Service - Specific