Yahoo! Messenger YVerInfo.dll ActiveX Control Buffer Overflows - Secunia Advisories - Vulnerability Information

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Yahoo! Messenger YVerInfo.dll ActiveX Control Buffer Overflows

Secunia Advisory:

SA26579

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Release Date:

2007-08-30

Last Update:

2007-09-04

Popularity:

17,492 views

Critical:

Moderately critical

Impact:

System access

Where:

From remote

Solution Status:

Vendor Patch

Software:

Yahoo! Messenger 8.x

Binary Analysis:

BA219 :: Available for 1 Credit

BA221 :: Available for 1 Credit

Secunia CVSS-2 Score:

Available in Secunia business solutions

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Advisory Content (Page 1 of 3)

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Description:
Some vulnerabilities have been reported in Yahoo! Messenger, which can be exploited by malicious people to compromise a user's system.

The vulnerabilities are caused due to boundary errors within the YVerInfo.GetInfo.1 and YVerInfo.GetInfo2.1 ActiveX controls (YVerInfo.dll) when handling the "fvCom()" and "info()" methods. These can be exploited to cause stack-based buffer overflows by passing specially-crafted, overly long arguments to the affected methods.

Successful exploitation allows execution of arbitrary code, but requires a malicious web page is in a domain that contains a ".yahoo." substring in the subdomain of the TLD (e.g. via a cross-site scripting vulnerability or by manipulating the DNS resolution).

The vulnerabilities are reported in YVerInfo.dll versions prior to 2007.8.27.1 included in Yahoo! Messenger 8.1 downloaded before 2007-08-29.

Change Page:
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