bugtraq - Apple Safari for Windows (4.0.2-4.0.5, 5.0-5.0.2) Math.random() predictability

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Message-ID: <2C907A76B43C464C82E7CF1AA278A8296956879C@MBX07.exg5.exghost.com>
Date: Sun, 21 Nov 2010 04:33:45 -0600
From: Amit Klein <amit.klein@...steer.com>
To: "bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>
Subject: Apple Safari for Windows (4.0.2-4.0.5, 5.0-5.0.2) Math.random()
 predictability

Hi list

Earlier this year, Trusteer discovered a vulnerability in Apple Safari for Windows (versions 4.0.2-4.0.5 and 5.0-5.0.2). The issue is in the Javascript Math.random function, which is implemented in Safari via its WebKit core. Trusteer reported this vulnerability to Apple and to WebKit.org. Today Apple released a fix to this vulnerability - as Safari 5.0.3 (http://support.apple.com/kb/HT1222, http://support.apple.com/kb/HT4455). 

For more details, please read the full report:
http://www.trusteer.com/sites/default/files/Temporary_User_Tracking_in_Safari_for_Windows.pdf

Thanks,
-Amit
Amit Klein, CTO, Trusteer