Vulnerability  oval:org.mitre.oval:def:4791
Win2k Large Window Size TCP RST Denial of Service  

TCP, when using a large Window Size, makes it easier for remote attackers to guess sequence numbers and cause a denial of service (connection loss) to persistent TCP connections by repeatedly injecting a TCP RST packet, especially in protocols that use long-lived connections, such as BGP.
Create Date: 2005-04-22 Last Update Date: 2011-05-16

Affected Platforms/Products

Affected Products (CPE + CVE references)
Platforms: windows (from OVAL definitions)
  • Microsoft Windows 2000

References

Criteria

The system is vulnerable
IF : All of the following are true Software section
IF : NOT the patch KB893066 is installed
Windows : Registry Test :  the patch KB893066 is installed 
At least one of the objects listed below must exist on the system (Existence check)
Windows : Registry Object 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Hotfix\KB893066 : Installed
value (equals) 1 (datatype=int)
windows : registry_state 
IF : the version of Tcpip.sys is less than 5.0.2195.7035
Windows : File Test :  the version of Tcpip.sys is less than 5.0.2195.7035 
At least one of the objects listed below must exist on the system (Existence check)
Windows : File 
[[value of ${{windows:registry_object:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion : SystemRoot}}]]\System32\drivers\tcpip.sys
version less than 5.0.2195.7035 (datatype=version)
windows : file_state 
IF : Win2K/XP/2003 service pack 4 (or earlier) is installed
Windows : Registry Test :  Win2K/XP/2003 service pack 4 (or earlier) is installed 
At least one of the objects listed below must exist on the system (Existence check)
Windows : Registry Object This registry key holds the service pack installed on the host if one is present.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion : CSDVersion
value pattern match ^Service Pack [0-4]$
windows : registry_state 
IF : Windows 2000 is installed
Windows : Registry Test :  Windows 2000 is installed 
At least one of the objects listed below must exist on the system (Existence check)
Windows : Registry Object This registry key holds the version of the installed operating system.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion : CurrentVersion
value (equals) 5.0
Registry key has a value of 5.0 windows : registry_state 

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