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Microsoft Security Bulletin MS03-005: Unchecked Buffer in Windows Redirector Could Allow Privilege Elevation (810577)
From: "Microsoft" <0_43921_04BF067D-4CF8-4245-B5C1-58573E5746A8_US () Newsletters Microsoft com>
Date: Wed, 5 Feb 2003 18:47:02 -0800
-----BEGIN PGP SIGNED MESSAGE----- - ------------------------------------------------------------------- Title: Unchecked Buffer in Windows Redirector Could Allow Privilege Elevation (810577) Date: 05 February 2003 Software: Microsoft Windows XP Impact: Privilege elevation Max Risk: Important Bulletin: MS03-005 Microsoft encourages customers to review the Security Bulletins at: http://www.microsoft.com/technet/security/bulletin/ms03-005.asp http://www.microsoft.com/security/security_bulletins/ms03-005.asp - ------------------------------------------------------------------- Issue: ====== The Windows Redirector is used by a Windows client to access files, whether local or remote, regardless of the underlying network protocols in use. For example, the "Add a Network Place" Wizard or the NET USE command can be used to map a network share as a local drive, and the Windows Redirector will handle the routing of information to and from the network share. A security vulnerability exists in the implementation of the Windows Redirector on Windows XP because an unchecked buffer is used to receive parameter information. By providing malformed data to the Windows Redirector, an attacker could cause the system to fail, or if the data was crafted in a particular way, could run code of the attacker's choice. Mitigating Factors: ==================== - An attacker would require the ability to log onto the system interactively in order to run programs that use the Windows Redirector. This vulnerability cannot be exploited remotely. - Windows XP systems that are not shared between users would not be at risk. Risk Rating: ============ - Windows XP: Important Patch Availability: =================== - A patch is available to fix this vulnerability. Please read the Security Bulletins at http://www.microsoft.com/technet/security/bulletin/ms03-005.asp http://www.microsoft.com/security/security_bulletins/ms03-005.asp for information on obtaining this patch. Acknowledgment: =============== - NSFocus (http://www.nsfocus.com) Home User Security Notification Service ======================================= Microsoft is now offering the Microsoft Security Update, a security bulletin notification service for home users. To learn more about this service, please go to: http://www.microsoft.com/security/security_bulletins/decision.asp - ------------------------------------------------------------------- THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. -----BEGIN PGP SIGNATURE----- Version: PGP 7.1 iQEVAwUBPkFkK40ZSRQxA/UrAQHveggArplVZ+xJOiBNEztCmEu3mQNk2Yt8bX6A 4Ua76YSaBOQgl2ukzlX8vFhcBBLzcEbAay0AYkLlxl05UrPXNdOSdS8j/qYp+8zP GTfJpZ95VoWZi6mlL/AEKWYRaWpLLXiFnn/PT+ORobWOuHeLQ4A0NHfQq3EAPVIV oIjJrluSpmSIKSvhcGtYEmGhHBggS9fVYb1TtNPs3RCAMuiSivxXSnVmALUsobkC RMsjQllfUy5VxlPLYtMQ4DkVYu+OHnLQ/k6+OyG8qpR9/6I4pO+rtqyfVsu1YBXn 5dVDdhZCl1uGIw0Y2JXFqntj+ExZp7vd9amQM9sYMMDEE17quvQKwQ== =aCRC -----END PGP SIGNATURE----- ******************************************************************* You have received this e-mail bulletin because of your subscription to the Microsoft Product Security Notification Service. For more information on this service, please visit http://www.microsoft.com/technet/security/notify.asp. To verify the digital signature on this bulletin, please download our PGP key at http://www.microsoft.com/technet/security/notify.asp. To unsubscribe from the Microsoft Security Notification Service, please visit the Microsoft Profile Center at http://register.microsoft.com/regsys/pic.asp If you do not wish to use Microsoft Passport, you can unsubscribe from the Microsoft Security Notification Service via email as described below: Reply to this message with the word UNSUBSCRIBE in the Subject line. For security-related information about Microsoft products, please visit the Microsoft Security Advisor web site at http://www.microsoft.com/security.
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- Microsoft Security Bulletin MS03-005: Unchecked Buffer in Windows Redirector Could Allow Privilege Elevation (810577) Microsoft (Feb 05)