[NT] Microsoft IE Devenum.dll COM Instantiation Code Execution

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Microsoft IE Devenum.dll COM Instantiation Code Execution
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SUMMARY

By crafting a malicious HTML page and alluring users to visit it, a remote
attacker can execute arbitrary code with the privilege of the user.

DETAILS

Vulnerable Systems:
* Microsoft Internet Explorer 5.01 SP4
* Microsoft Internet Explorer 5.5 SP2
* Microsoft Internet Explorer 6
* Microsoft Internet Explorer 6 SP1

Internet Explorer does not properly call interface arguments when
instantiating COM component in devenum.dll, resulting in exceptional
memory access which might cause IE to crash. Carefully crafted HTML page
might allow a remote attacker to execute arbitrary code.

Workaround:
Disable ActiveX control in Internet Explorer.

Disclosure Timeline:
2005.07.13 - Informed the vendor.
2005.07.16 - The vendor confirmed the vulnerability
2005.08.09 - The vendor releases a security bulletin (MS05-038) and
related patches

ADDITIONAL INFORMATION

The information has been provided by <mailto:security@nsfocus.com>
NSFOCUS Security Team.
The original article can be found at:
<http://www.nsfocus.com/english/homepage/research/0502.htm>
http://www.nsfocus.com/english/homepage/research/0502.htm

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