full-disclosure - ZDI-12-093 : (Pwn2Own) Microsoft Internet Explorer Fixed Table Colspan Remote Code Execution Vulnerability

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Message-ID: <2BAA25C4BB07FB4B84BFEA8CE82E1A20A32537DE2E@GVW1339EXA.americas.hpqcorp.net>
Date: Tue, 12 Jun 2012 20:43:50 +0100
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>
Cc: Zero Day Initiative <zdi@...com>, ZDI Disclosures <zdi-disclosures@...com>
Subject: ZDI-12-093 : (Pwn2Own) Microsoft Internet
 Explorer Fixed Table Colspan Remote Code Execution Vulnerability

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ZDI-12-093 : (Pwn2Own) Microsoft Internet Explorer Fixed Table Colspan
Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-093
June 12, 2012

- -- CVE ID:
CVE-2012-1876

- -- CVSS:
9, AV:N/AC:L/Au:N/C:P/I:P/A:C

- -- Affected Vendors:

Microsoft

- -- Affected Products:

Microsoft Internet Explorer

- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12380.
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 Microsoft Internet Explorer. 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 the way Internet Explorer handles
dynamically changed colspans on a column in a table with the
table-layout:fixed style. If the colspan is increased after initial
creation it will result in a heap overflow. This can lead to remote code
execution under the context of the current program.

- -- Vendor Response:

Microsoft has issued an update to correct this vulnerability. More details
can be found at:

http://www.microsoft.com/technet/security/bulletin/MS12-037.mspx

- -- Disclosure Timeline:
2012-03-14 - Vulnerability reported to vendor

2012-06-12 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* VUPEN Vulnerability Research Team http://www.vupen.com

- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
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
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

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