SSH protocol 2 (aka SSH-2) public key authentication in the development snapshot of OpenSSH 2.3.1, available from 2001-01-18 through 2001-02-08, does not perform a challenge-response step to ensure that the client has the proper private key, which allows remote attackers to bypass authentication as other users by supplying a public key from that user's authorized_keys file.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Link | Tags |
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http://archives.neohapsis.com/archives/bugtraq/2001-02/0159.html | mailing list |
http://www.openbsd.org/advisories/ssh_bypass.txt | patch |
https://exchange.xforce.ibmcloud.com/vulnerabilities/6084 | vdb entry |
http://online.securityfocus.com/bid/2356 | vdb entry patch |