Secunia Research Advisory

Internet Explorer Data Stream Handling Vulnerability


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                     Secunia Research 08/04/2008

      - Internet Explorer Data Stream Handling Vulnerability -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* Internet Explorer 5.01
* Internet Explorer 6
* Internet Explorer 7

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

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3) Vendor's Description of Software 

Product Link:
http://www.microsoft.com/windows/products/winfamily/ie/default.mspx

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Internet Explorer,
which can be exploited by malicious people to compromise a user's
system.

The vulnerability is caused due to an error when processing data
streams and can be exploited to trigger a use-after-free condition by
returning a specially crafted data stream of e.g. an unexpected
MIME-type for which no handler is registered.

Successful exploitation allows execution of arbitrary code when a user
visits a malicious website.

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5) Solution 

Apply patches provided by MS08-024.

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6) Time Table 

23/11/2007 - Vendor notified.
23/11/2007 - Vendor response.
08/04/2008 - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2008-1085 for the vulnerability.

MS08-024 (KB947864):
http://www.microsoft.com/technet/security/Bulletin/MS08-024.mspx

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

https://www.flexera.com/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general.

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

https://www.flexera.com/company/careers

Secunia offers a FREE mailing list called Secunia Security Advisories:

https://www.flexera.com/secunia_security_advisories/ 

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10) Verification 

Please verify this advisory by visiting the Secunia website:
https://www.flexera.com/about-us/secunia-research/advisories/sr-2007-100.html

Complete list of vulnerability reports published by Secunia Research:
https://www.flexera.com/about-us/secunia-research/advisories/

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