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Yahoo! Messenger AudioConf ActiveX Control Buffer Overflow
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SUMMARY
A vulnerability in Yahoo! Messenger's AudioConf ActiveX allows attackers
to cause the component to overflow an internal buffer, which in turn can
be used to cause the program to execute arbitrary code.
DETAILS
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Yahoo Messenger. User interaction is required
to exploit this vulnerability in that the target must visit a malicious
page.
The specific flaw exists within the ActiveX control Yahoo.AudioConf:
DLL: yacscom.dll
CLSID: 85A4A99C-8C3D-499E-A386-E0743DFF8FB7
When large values are specified for the 'socksHostname' and 'hostname'
properties, and the createAndJoinConference() method is called, a stack
overflow occurs. Exploitation can result in code execution under the
context of the current user.
Vendor Response:
Yahoo has issued an update to correct this vulnerability. More details can
be found at:
<http://messenger.yahoo.com/security_update.php?id=031207>
http://messenger.yahoo.com/security_update.php?id=031207
Disclosure Timeline:
2006.10.27 - Vulnerability reported to vendor
2006.11.10 - Digital Vaccine released to TippingPoint customers
2007.04.03 - Coordinated public release of advisory
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1680>
CVE-2007-1680
ADDITIONAL INFORMATION
The information has been provided by Peter Vreugdenhil.
The original article can be found at:
<http://www.zerodayinitiative.com/advisories/ZDI-07-012.html>
http://www.zerodayinitiative.com/advisories/ZDI-07-012.html
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