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Yahoo! Messenger "yauto.dll" Buffer Overflow Vulnerability
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Secunia Advisory:
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SA10342
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Release Date:
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2003-12-03
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Last Update:
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2003-12-04
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Popularity:
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18,599 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
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Description:
A vulnerability has been reported in Yahoo! Messenger, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to a boundary error in the ActiveX component "yauto.dll" in the "Open()" function. This can be exploited to cause a buffer overflow by supplying an overly long argument to the vulnerable function via a malicious web page.
Successful exploitation may allow a malicious web site to execute arbitrary code on a user's system.
The vulnerability has been reported in versions 5.6.0.1347 and prior.
Solution:
Install update.
http://messenger.yahoo.com/messenger/security/
Remove the vulnerable ActiveX component.
Secunia furthermore recommends that running of ActiveX controls and Active Scripting support are disabled and only allowed on a site per site basis.
Provided and/or discovered by:
Tri Huynh
Changelog:
2003-12-04: Yahoo! issues an update.
Original Advisory:
Yahoo! Ymsg Control Update:
http://messenger.yahoo.com/security/update4.html
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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