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Microsoft Internet Explorer Event Handler Memory Corruption Vulnerability



ZDI-09-038: Microsoft Internet Explorer Event Handler Memory Corruption Vulnerability
ZDI-09-038: Microsoft Internet Explorer Event Handler Memory Corruption Vulnerability



ZDI-09-038: Microsoft Internet Explorer Event Handler Memory Corruption
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-038 
June 10, 2009

-- CVE ID:
CVE-2009-1530

-- Affected Vendors:
Microsoft

-- Affected Products:
Microsoft Internet Explorer

-- 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.

The specific flaw exists when repeatedly calling event handlers after
adding nodes of an HTML document. When a specially crafted webpage is
repeatedly rendered, memory is improperly reused after it has been
freed. Due to the controllable nature of the web browser, this
vulnerability can be exploited to remotely compromise a system running
under the security context of the currently logged in 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/MS09-019.mspx 

-- Disclosure Timeline:
2009-01-26 - Vulnerability reported to vendor
2009-06-10 - Coordinated public release of advisory

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

-- 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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