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Vulnerability Note VU#272644Yahoo! Audio Conferencing ActiveX control vulnerable to buffer overflowOverviewA remotely exploitable buffer overflow vulnerability has been discovered in the Yahoo! Audio Conferencing ActiveX control.I. DescriptionThe Yahoo! Audio Conferencing ActiveX control is used in the web-based Yahoo! Chat service, as well as in the Win32 Yahoo! Messenger application. There is a remotely exploitable buffer overflow in this ActiveX control that could allow a remote attacker to take various unauthorized actions. In order to exploit this vulnerability, the attacker would need to convince the victim to view malicious HTML (a web page, for example).II. ImpactVarious impacts are well summarized in the documentation issued by Yahoo! Inc. in response to this vulnerability:Some common impacts of a buffer overflow might include being involuntarily logged out of a Chat and/or Messenger session, the crash of an application such as Internet Explorer, and in some instances, the introduction of executable code. III. SolutionUpdate your Yahoo! Audio Conferencing ActiveX control. For detailed instructions, please see the Yahoo! Audio Conferencing Update web page.
References
This vulnerability was discovered by Cesar <sqlsec@yahoo.com>. This document was written by Ian A Finlay.
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