CSA will defend itself against the WMF exploits?

Anyone?

We confirmed in our laboratory this week that CSA 4.5 blocks attempts to exploit the WMF vulnerability, recognizing as an attempt to call a function of a buffer. I've attached a screenshot of the application of the CSA.

Only caveat is this: the default answer is to put an end to the application running the exploit. However the rules 'out of the box' allow the user allow the activity, which then allows the exploit to run. We are re-tuning our rules in order to avoid an answer Yes to this request.

Our tests were conducted with a live feat. If you want to test this internal, the best bet is to go to a site with a feat without known danger of wmf. (Also those living keep getting taken down anyway!). This site is a good start:

http:// sipr.net / test.wmf (remove spaces in the URL)

A really good WMF exploit FAQ is here:

http://ISC.sans.org/diary.php?storyId=994

Tags: Cisco Security

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