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

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.

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Regards
AKS aka 0kn0ck
http://www.secniche.org Received on Wed Aug 15 14:27:54 2007