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Reverse Engineer Wanted

Secunia offers a Security Specialist position with emphasis on
reverse engineering of software and exploit code, auditing of
source code, and analysis of vulnerability reports.

http://secunia.com/secunia_security_specialist/

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TITLE:
Internet Explorer HTML Help ActiveX Control Memory Corruption

SECUNIA ADVISORY ID:
SA20906

VERIFY ADVISORY:
http://secunia.com/advisories/20906/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Microsoft Internet Explorer 6.x
http://secunia.com/product/11/

DESCRIPTION:
HD Moore has discovered a vulnerability in Internet Explorer, which
potentially can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to an error in the HTML Help ActiveX
control (hhctrl.ocx) when handling the "Image" property. This can be
exploited to cause a memory corruption by setting an overly long
string multiple times for the property.

Successful exploitation may allow execution of arbitrary code.

The vulnerability has been confirmed on a fully patched system
running Windows XP SP2 with Internet Explorer 6.0. Other versions may
also be affected.

SOLUTION:
Disable the "Run ActiveX controls and plug-ins" setting for all but
trusted sites.

PROVIDED AND/OR DISCOVERED BY:
HD Moore

ORIGINAL ADVISORY:
http://browserfun.blogspot.com/2006/07/mobb-2-internethhctrl-image-property.html

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About:
This Advisory was delivered by Secunia as a free service to help
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Secunia NEVER sends attached files with advisories.
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