full-disclosure - ZDI-11-100: Apple Webkit Root HTMLBRElement Style Remote Code Execution Vulnerability

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Message-ID: <AF6E290B52139041BD6CA591212E455B575DE57FDE@GVW0442EXB.americas.hpqcorp.net>
Date: Wed, 2 Mar 2011 22:57:51 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, 
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: ZDI-11-100: Apple Webkit Root HTMLBRElement Style
 Remote Code Execution Vulnerability

ZDI-11-100: Apple Webkit Root HTMLBRElement Style Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-100

March 2, 2011

-- CVE ID:
CVE-2011-0149

-- CVSS:
9, (AV:N/AC:M/Au:N/C:C/I:P/A:C)

-- Affected Vendors:
Apple

-- Affected Products:
Apple WebKit

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10884. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Apple's Webkit Library. User interaction is
required to exploit this vulnerability in that the target must visit a
malicious page or open a malicious file.

The specific flaw exists within how the application parses a specially
formatted HTML file. When parsing a particular element that also defines
the namespace of the document, the library will call a dangling pointer
which is consistent but unmapped. Due to this being unmapped, if an
attacker can get code loaded at that address this can can lead to code
execution under the context of the application.

-- Vendor Response:
Apple has issued an update to correct this vulnerability. More
details can be found at:
http://support.apple.com/kb/HT4554

-- Disclosure Timeline:
2010-10-18 - Vulnerability reported to vendor
2011-03-02 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * wushi of team509

-- About the Zero Day Initiative (ZDI):
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a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
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TippingPoint provides its customers with zero day protection through
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