Microsoft Internet Explorer DOM Ojbect substringData() Heap Overflow Vulnerability

Advisory Content :

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 (at) buzzworld (dot) org [email concealed])

-- 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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Microsoft Internet Explorer DOM Ojbect substringData() Heap Overflow Vulnerability