The Yahoo Messenger YMailAttach ActiveX control contains a buffer overflow, which could allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
Yahoo Messenger is an instant messaging application. Yahoo Messenger includes several ActiveX controls. The YMailAttach ActiveX control, which is provided by ymmapi.dll, contains a buffer overflow vulnerability.
By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. The attacker could also cause Internet Explorer (or the program using the WebBrowser control) to crash.
Apply an update
As specified in the Yahoo Security Update, this issue is addressed in versions of Yahoo Messenger from Nov 2nd 2006 or later. Version 2005.1.1.4 or higher of ymmapi.dll contains the fix.
Thanks to Yahoo for reporting this vulnerability.
This document was written by Will Dormann.
|Date First Published:||2006-12-15|
|Date Last Updated:||2007-02-06 20:59 UTC|