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Zero Day Initiative Advisory 08-087

Zero Day Initiative Advisory 08-087
Posted Dec 9, 2008
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 08-087 - This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer 7 on the Microsoft Vista operating system. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists during a WebDAV fetch of a document from a path containing a large number of characters. Mishandling of cached content results in a heap corruption which can be leveraged to execute arbitrary code under the context of the current instance of Internet Explorer.

tags | advisory, arbitrary
advisories | CVE-2008-4259
SHA-256 | b7e31f5172a842f8f18ffa92303a19af6f2fd3be8bec591aff3b4c8e6630bf3f

Zero Day Initiative Advisory 08-087

Change Mirror Download
ZDI-08-087: Microsoft Internet Explorer Webdav Request Parsing Heap 
Corruption Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-087
December 9, 2008

-- CVE ID:
CVE-2008-4259

-- 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 6615.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of Microsoft Internet Explorer 7 on the
Microsoft Vista operating system. User interaction is required to
exploit this vulnerability in that the target must visit a malicious
page.

The specific flaw exists during a WebDAV fetch of a document from a path
containing a large number of characters. Mishandling of cached content
results in a heap corruption which can be leveraged to execute arbitrary
code under the context of the current instance of Internet Explorer.

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

http://www.microsoft.com/technet/security/bulletin/MS08-073.mspx

-- Disclosure Timeline:
2008-05-19 - Vulnerability reported to vendor
2008-12-09 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Brett Moore, Insomnia Security

-- 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
may contain confidential, proprietary and/or privileged information.
Any unauthorized review, use, disclosure and/or distribution by any
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delete and/or destroy all copies of this message regardless of form and
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