Microsoft Services for Unix (SFU) invalid RPC packet denial of service

sfu-invalid-rpc-dos (10259) The risk level is classified as MediumMedium Risk


The RPC server in Microsoft Services for Unix (SFU) is vulnerable to a denial of service attack, caused by an implementation error in the Sun RPC library. A remote attacker could send invalid RPC packets to the RPC server on TCP port 111, which would invoke the implementation error and cause the RPC server to hang. The server must be restarted to regain normal functionality.


Denial of Service


Apply the patch for this vulnerability, as listed in Microsoft Security Bulletin MS02-057. See References.


  • Microsoft Security Bulletin MS02-057: Flaw in Services for Unix 3.0 Interix SDK Could Allow Code Execution (Q329209).
  • BID-5880: Microsoft Invalid RPC Request Denial Of Service Vulnerability
  • CVE-2002-1141: An input validation error in the Sun Microsystems RPC library Services for Unix 3.0 Interix SD, as implemented on Microsoft Windows NT4, 2000, and XP, allows remote attackers to cause a denial of service via malformed fragmented RPC client packets, aka Denial of service by sending an invalid RPC request.
  • OSVDB ID: 14509: Microsoft Services for Unix Malformed RPC Client Fragment Packet DoS

Platforms Affected:

  • Microsoft Windows Services for UNIX 3.0


Oct 02, 2002

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