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Zero Day Initiative Advisory 08-039

Zero Day Initiative Advisory 08-039
Posted Jun 11, 2008
Authored by Peter Vreugdenhil, Tipping Point, Sebastian Apelt | Site zerodayinitiative.com

A vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of various Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists in the substringData() method when called on a DOM object that has been manipulated in a special way. The attack results in an exploitable heap buffer allowing for code execution under the context of the current user.

tags | advisory, remote, arbitrary, code execution
advisories | CVE-2008-1442
SHA-256 | 199a27adda6f9b915cf6856311e07418574bbd6af52f57dd0a8956c4404ef6a1

Zero Day Initiative Advisory 08-039

Change Mirror Download
ZDI-08-039: Microsoft Internet Explorer DOM Ojbect substringData() Heap 
Overflow Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-039
June 10, 2008

-- CVE ID:
CVE-2008-1442

-- 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 6155.
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 various Microsoft Internet Explorer. User
interaction is required to exploit this vulnerability in that the target
must visit a malicious page.

The specific flaw exists in the substringData() method when called on a
DOM object that has been manipulated in a special way. The attack
results in an exploitable heap buffer allowing for code execution under
the context of the current user.

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

http://www.microsoft.com/technet/security/Bulletin/MS08-031.mspx

-- Disclosure Timeline:
2008-02-07 - Vulnerability reported to vendor
2008-06-10 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Anonymous
* Peter Vreugdenhil
* Sebastian Apelt (webmaster@buzzworld.org)

-- 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/

CONFIDENTIALITY NOTICE: This e-mail message, including any attachments,
is being sent by 3Com for the sole use of the intended recipient(s) and
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Any unauthorized review, use, disclosure and/or distribution by any
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