WinSSHD incomplete connections denial of service

winsshd-incomplete-connection-dos (8470) The risk level is classified as MediumMedium Risk

Description:

WinSSHD is vulnerable to a denial of service attack. A remote attacker can send specially-crafted connection attempts to WinSSHD to terminate existing connections and block future connections.


Consequences:

Denial of Service

Remedy:

Upgrade to the latest version of WinSSHD (build 2002-03-16 or later), available from the Bitvise Web site. See References.

References:

  • Bitvise Web site: bitvise/existing-users: Existing Users.
  • BugTraq Mailing List, Mon Mar 18 2002 - 03:39:07 CST: KPMG-2002005: BitVise WinSSH Denial of Service.
  • BID-4300: BitVise WinSSHD Numerous Connections DoS Vulnerability
  • CVE-2002-0460: Bitvise WinSSHD before 2002-03-16 allows remote attackers to cause a denial of service (resource exhaustion) via a large number of incomplete connections that are not properly terminated, which are not properly freed by SSHd.
  • OSVDB ID: 8039: Bitvise WinSSHD Incomplete Connection Saturation DoS

Platforms Affected:

  • Bitvise WinSSHD 1.1

Reported:

Mar 18, 2002

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