ZDI-07-012: Yahoo! Messenger AudioConf ActiveX Control Buffer Overflow http://www.zerodayinitiative.com/advisories/ZDI-07-012.html April 3, 2007
-- CVE ID: CVE-2007-1680
-- Affected Vendor: Yahoo!
-- Affected Products: Yahoo! Messenger 8.x
-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since November 10, 2006 by Digital Vaccine protection filter ID 4791. For further product information on the TippingPoint IPS:
-- Vulnerability 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:
-- 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
-- Credit: This vulnerability was discovered by Peter Vreugdenhil.
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