Microsoft Windows NetDDE Agent can be used to gain elevated privileges
| win-netdde-gain-privileges (10343) |  Medium Risk |
Description:
The NetDDE Agent in Microsoft Windows 2000, Windows NT, and Windows XP could be used by a local attacker to gain elevated privileges on the system. A local attacker could send malicious shell code to the NetDDE Agent using a WM_COPYDATA message, and then send a WM_TIMER message to cause the shell code to be executed on the system with elevated privileges.
Consequences:
Gain Privileges
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS02-071. See References.
For Windows 2000:
Microsoft originally provided a patch for this vulnerability in MS02-071, but it has been superseded by the patch released with MS04-011. Note: Microsoft is reporting that MS02-071 has been superseded by the patch released with MS04-031. Microsoft is also reporting that MS02-071 has been superseded by the patch released with MS04-032. See References.
For Windows NT:
Microsoft originally provided a patch for this vulnerability in MS02-071, but it has been superseded by the patch released with MS04-011. Microsoft is also reporting that MS02-071 has been supersede by the patch released with MS04-032. See References.
Note: It has been reported on some systems this patch could cause the system to crash without warning. See References.
References:
- BugTraq Mailing List, 2003-01-12 14:22:18: A patch for "Windows WM_TIMER Message Handling flaw" causes random crashes on Windows NT.
- CIAC Information Bulletin N-027: Flaw in Windows WM_TIMER Message Handling.
- getad.chat.ru: Security Advisory 10.06.2002.
- Microsoft Security Bulletin MS02-071: Flaw in Windows WM_TIMER Message Handling Could Enable Privilege Elevation (328310).
- Microsoft Security Bulletin MS04-011: Security Update for Microsoft Windows (835732).
- Microsoft Security Bulletin MS04-031: Vulnerability in NetDDE Could Allow Remote Code Execution (841533).
- Microsoft Security Bulletin MS04-032: Security Update for Microsoft Windows (840987).
- White paper: Next-Generation W32 exploits: fundamental API flaws: Exploiting design flaws in the Win32 API for privilege escalation..
- BID-5408: Microsoft Windows Window Message Subsystem Design Error Vulnerability
- BID-5927: Microsoft Windows NetDDE Privilege Escalation Vulnerability
- CVE-2002-1230: NetDDE Agent on Windows NT 4.0, 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows local users to execute arbitrary code as LocalSystem via shatter style attack by sending a WM_COPYDATA message followed by a WM_TIMER message, as demonstrated by GetAd, aka Flaw in Windows WM_TIMER Message Handling Could Enable Privilege Elevation.
- OSVDB ID: 13416: Microsoft Windows NetDDE Agent WM_COPYDATA Message Arbitrary Code Execution (shatter)
Platforms Affected:
- Microsoft Windows 2000
- Microsoft Windows NT 4.0
- Microsoft Windows NT 4.0 Terminal Server
- Microsoft Windows XP
Reported:
Oct 06, 2002
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