On Thu, 29 Mar 2007, Alexander Sotirov wrote: > Today Microsoft released a security advisory about a vulnerability in the > Animated Cursor processing code in Windows: > http://www.microsoft.com/technet/security/advisory/935423.mspx > > It seems like the vulnerability is already exploited in the wild: > http://asert.arbornetworks.com/2007/03/any-ani-file-could-infect-you/ Bleeding Edge Threats made available Snort rule that detects some (all?) exploits using this vulnerability: http://www.bleedingthreats.net/index.php/2007/03/30/ms-ani-exploit-rule-details-emerging/ I don't know if this rule detects all possible exploits or just one particular type. Here is a Firekeeper version of the rule, which can be used to detect sites hosting malicious files: alert (msg:"BLEEDING-EDGE CURRENT EVENTS MS ANI exploit"; body_content:"|54 53 49 4C 03 00 00 00 00 00 00 00 54 53 49 4C 04 00 00 00 02 02 02 02 61 6E 69 68 52|"; reference:url,http://isc.sans.org/diary.html?storyid=2534; reference:url,http://www.avertlabs.com/research/blog/?p=233; reference:url,doc.bleedingthreats.net/2003519; fid:2003519; rev:1;) Rule is triggered for example by the following images: http://www.i5460.net/admin12/2.jpg http://www.i5460.net/admin12/1.jpg Cheers, Jan Wrobel http://firekeeper.mozdev.org
