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Vulnerability Score 7.5 7.5
CVE Id CVE-2001-1473
Last Modified 06 Mar 2009 12:00:00
Published 18 Jan 2001 12:00:00
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact PARTIAL PARTIAL
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



The SSH-1 protocol allows remote servers to conduct man-in-the-middle attacks and replay a client challenge response to a target server by creating a Session ID that matches the Session ID of the target, but which uses a public key pair that is weaker than the target's public key, which allows the attacker to compute the corresponding private key and use the target's Session ID with the compromised key pair to masquerade as the target.

Vulnerable Systems


  • Ssh 1.2.24

  • Ssh 1.2.25

  • Ssh 1.2.26

  • Ssh 1.2.27

  • Ssh 1.2.28

  • Ssh 1.2.29

  • Ssh 1.2.30

  • Ssh 1.2.31


CERT-VN - VU#684820

XF - ssh-authentication-forwarding(6603)

Last Updated: 27 May 2016 10:36:41