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Posts from the ‘Windows’ Category

31
Aug

Apple QuickTime 7.6.7 “_Marshaled_pUnk” Code Execution Vulnerability and Metasploit Exploit

A new (read: yet another) 0day QuickTime vulnerability has been discovered by researcher Ruben Santamarta which leads to arbitrary client-side code execution. The vulnerability, which affects QuickTime <= 7.6.7 on Windows XP, Vista and 7 and defeats DEP and ASLR, is due to a flaw in the way the QuickTime ActiveX controller handles a supplied parameter and treats it as a trusted pointer.

This vulnerability can be exploited by luring the victim to a malicious web page. A heap-spraying Metasploit module has already been published which exploits this issue.

Read Reuben’s original advisory and then get Firefox.

15
Aug

QuickTime Player SMIL Buffer Overflow and Metasploit Exploit

On the 26th July 2010, Krystian Kloskowski discovered a vulnerability in QuickTime Player 7.6.6 for Windows caused by a buffer overflow in the application’s error logging.

The original advisory states:

The vulnerability is caused due to a boundary error in QuickTimeStreaming.qtx when constructing a string to write to a debug log file. This can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into viewing a specially crafted web page that references a SMIL file containing an overly long URL.

Successful exploitation of this vulnerability leads to the ability of executing arbitrary code on the victim’s computer.

A couple of days ago, Joshua Drake (aka. jduck) submitted a working exploit module to the Metasploit Framework.

As QuickTime is installed on many Windows systems these days (it’s included as part of iTunes), this vulnerability poses a real threat. As always users should beware of clicking on unknown links, but ultimately if someone wants to get you to visit a malicious page, they can.

In this case users should update QuickTime asap. Apple has released QuickTime 7.6.7 which fixes this issue.

[Update] Check out the video below for a demo of the Metasploit module in action:

Metasploit_Apple_Quicktime_Smil_Debug from 4xteam on Vimeo.

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