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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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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 (Secunia mirror)
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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.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.
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
Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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