Advisory : Microsoft Internet Explorer Pop up Blocker Bypassing and Dos 
Vulnerability

Dated : 15 August 2007

Severity : Critical

Explanation :

The vulnerability persists in the popup blocker functioning to allow 
specific websites to execute
popup in the running instance of Internet Explorer. An attacker can 
easily exploits it by enabling
a browser to run a malicious script in the context of Internet Explorer. 
The script manipulates the
registry entries for specific websites through Javascript. It adds fake 
or malicious websites as an
allowed websites in the pop up blocker. The cause user visiting a 
untrusted website or any othe
malicious cause.

Detail Advisory :
http://www.secniche.org/advisory/Internet_Pop_Phish_Dos_Adv.pdf 
http://www.secniche.org/adv.html 


Proof of Concept : Level 1 Infection Test
http://www.secniche.org/misc/ie_pop_by_level1_test.zip 

Test run fine locally as well with Web server [IIS] automated server 
object calling. Infection
through Active X Object.

Regards
AKS aka 0kn0ck
http://www.secniche.org