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Yahoo! Messenger AudioConf ActiveX Control Buffer Overflow
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Secunia Advisory:
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SA24742
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Release Date:
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2007-04-04
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Last Update:
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2007-04-10
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Popularity:
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12,875 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Yahoo! Messenger 5.x
Yahoo! Messenger 6.x
Yahoo! Messenger 7.x
Yahoo! Messenger 8.x
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| CVE reference: | CVE-2007-1680
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Description:
A vulnerability has been reported in Yahoo! Messenger, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error within the AudioConf ActiveX control (yacscom.dll) component of Yahoo! Messenger. This can be exploited to cause a stack-based buffer overflow by setting the "socksHostname" and "hostName" properties to an overly large string and then calling the "createAndJoinConference()" method.
Successful exploitation allows execution of arbitrary code when a user visits a malicious web site.
The vulnerability is reported in version 8.x. Other versions may also be affected.
Solution:
Update to the latest version.
http://messenger.yahoo.com
Set the kill-bit on the affected ActiveX control.
Provided and/or discovered by:
Discovered by Peter Vreugdenhil and reported via ZDI.
Changelog:
2007-04-10: Added link to US-CERT.
Original Advisory:
Yahoo!:
http://messenger.yahoo.com/security_update.php?id=031207
ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-07-012.html
Other References:
US-CERT VU#388377:
http://www.kb.cert.org/vuls/id/388377
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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