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Microsoft Security Bulletin MS03-013: Buffer Overrun in Windows Kernel Message Handling could Lead to Elevated Privileges (811493)
From: "Microsoft" <0_46831_04BF067D-4CF8-4245-B5C1-58573E5746A8_US () Newsletters Microsoft com>
Date: Wed, 16 Apr 2003 14:23:23 -0700
-----BEGIN PGP SIGNED MESSAGE----- - ---------------------------------------------------------------------- Title: Buffer Overrun in Windows Kernel Message Handling could Lead to Elevated Privileges (811493) Date: 16 April 2003 Software: Microsoft Windows NT 4.0, Windows 2000, and Windows XP Impact: Local Elevation of Privilege Max Risk: Important Bulletin: MS03-013 Microsoft encourages customers to review the Security Bulletins at: http://www.microsoft.com/technet/security/bulletin/MS03-013.asp http://www.microsoft.com/security/security_bulletins/ms03-013.asp - ---------------------------------------------------------------------- Issue: ====== The Windows kernel is the core of the operating system. It provides system level services such as device and memory management, allocates processor time to processes and manages error handling. There is a flaw in the way the kernel passes error messages to a debugger. A vulnerability results because an attacker could write a program to exploit this flaw and run code of their choice. An attacker could exploit this vulnerability to take any action on the system including deleting data, adding accounts with administrative access, or reconfiguring the system. For an attack to be successful, an attacker would need to be able to logon interactively to the system, either at the console or through a terminal session. Also, a successful attack would require the introduction of code in order to exploit this vulnerability. Because best practices recommends restricting the ability to logon interactively on servers, this issue most directly affects client systems and terminal servers. Mitigating Factors: ==================== - - A successful attack requires the ability to logon interactively to the target machine, either directly at the console or through a terminal session. - - Properly secured servers would be at little risk from this vulnerability. Standard best practices recommend only allowing trusted administrators to log onto such systems interactively; without such privileges, an attacker could not exploit the vulnerability. Risk Rating: ============ Important Patch Availability: =================== - A patch is available to fix this vulnerability. Please read the Security Bulletins at http://www.microsoft.com/technet/security/bulletin/ms03-013.asp http://www.microsoft.com/security/security_bulletins/ms03-013.asp for information on obtaining this patch. Acknowledgment: =============== - Oded Horovitz of Entercept Security Technologies - http://www.entercept.com - --------------------------------------------------------------------- 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 iQEVAwUBPp2ViY0ZSRQxA/UrAQEiawf9EUnqORGjrdoZdh+Gu8Kz/B8vY3IIeuG4 UOzXkbSb50A0JRWz81eH6Iji3PVinzLea0ENFm+xJDaMlWmV8OtVVtCDmiImvbDS 9rkK7s6o4y/fQLhM5aKPua3Zttzl8dZi58kxwnliuvRqviGtVtWGaTGlIFxCbkkD 1G7GXv1QrzTPfbVSJzuCTJdlL48lBTgfmx7ga4LeS1VkBBVqPEV/fKj3qlYWVjfB ld9aIxgCLq9OsYO4Fzk4gBfFO0NXp3cwdZQE3UzqUJUpbWrN4diN6FL6Uw92268o iKh6hQBaToBANQ8GNwjME59sq/qUHkAItx+zD6sypufZQtWqOat3pw== =Hy8d -----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 MS03-013: Buffer Overrun in Windows Kernel Message Handling could Lead to Elevated Privileges (811493) Microsoft (Apr 16)