Microsoft Security Bulletin (MS00-068)
Patch Available for "OCX Attachment" Vulnerability Originally posted: September 26, 2000
Microsoft has released a patch that eliminates a security vulnerability in Microsoft(r) Windows Media Player (WMP) 7 but primarily affects e-mail applications. The net effect of the vulnerability is that it could enable a malicious user to create an e-mail that, when closed after being read, could cause the e-mail application to fail.
Frequently asked questions regarding this vulnerability and the patch can be found at http://www.microsoft.com/technet/security/bulletin/fq00-068.asp
OCX controls are containers that can hold multiple ActiveX controls. A particular OCX control, associated with Windows Media Player, could be used in a denial of service attack against RTF-enabled e-mail clients such as Outlook and Outlook Express. If the affected control were programmatically embedded into an RTF mail and then sent to another user, the user's mail client would fail when he closed the mail. The vulnerability would not cause any lasting effects. The user could resume normal operation by restarting the mail client and deleting the affected mail.
Note Additional security patches are available at the Microsoft Download Center
Please see the following references for more information related to this issue. - Frequently Asked Questions: Microsoft Security Bulletin MS00-068, http://www.microsoft.com/technet/security/bulletin/fq00-068.asp - Microsoft Knowledge Base article Q274303 discusses this issue and will be available soon. - Microsoft TechNet Security web site, http://www.microsoft.com/technet/security/default.asp
This is a fully supported patch. Information on contacting Microsoft Product Support Services is available at http://support.microsoft.com/support/contact/default.asp.
Microsoft thanks Luciano Martins of USSR Labs (www.ussrback.com) for reporting this issue to us and working with us to protect customers.
September 26, 2000: Bulletin Created.
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