Safari 5.0.2 Update Fixes WebKit Bugs
Apple has released Safari 5.0.2 and 4.1.2 updates for Mac OS X and Windows which fix issues in both Safari and WebKit (the browser’s rendering engine).
The first issue, which only affects Safari on Windows systems, may lead to code execution if the user attempts to reveal the location of a downloaded file. The other two vulnerabilities include an input validation issue in WebKit’s handling of floating point data types, and a use-after-free issue in WebKit’s handling of elements with run-in styling. Both of these could be used to perform arbitrary code execution.
These two updates should be available in Software Update.
Hit the jump for Apple’s full patch info.
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.
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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