Microsoft Windows NT SynAttackProtect denial of service
| nt-synattackprotect-dos (5573) |  Medium Risk |
Description:
Windows NT is vulnerable to a denial of service attack if the value for SynAttackProtect registry entry is configured to '1' or '2'. A remote attacker can use the CyberCop Scanner TCP Sequence Prediction check (module 13002) against a vulnerable system to cause the system to crash.
The default value setting for the SynAttackProtect is 0; however, Microsoft recommends changing this value to 2 to prevent a different denial of service attack caused by retransmission of SYN-ACK packets.
Platforms Affected:
- Microsoft, Windows NT 4.0
Remedy:
No remedy available as of August 16, 2008.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Wed Nov 22 2000 - 09:13:52 CST, Killing NT 4.0 (HOT FIXES or NO / SP6a) Remotely using SynAttackProtect Key Corrected version and solution FOUND :) at http://archives.neohapsis.com/archives/bugtraq/2000-11/0315.html.
- Microsoft TechNet, Security Considerations for Network Attacks at http://www.microsoft.com/TechNet/security/dosrv.asp.
- BID-1987: Microsoft NT 4.0 SynAttackProtect Denial of Service Vulnerability
Reported:
Nov 21, 2000
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