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OpenSSH < 2.3.2 SSHv2 Public Key Authentication Bypass

Critical

Synopsis

The remote host is vulnerable to a flaw that allows for the bypassing of authentication.

Description

The remote host is running OpenSSH 2.3.1. This version is vulnerable to a flaw that allows any attacker who can obtain the public key of a valid SSH user to log into this host without any authentication.

Note: PVS has solely relied on the banner of the SSH client to perform this check. Any backported patches or workarounds such as recompiling or edited configurations are not observable through the banner.

Solution

Upgrade to OpenSSH 2.3.2 or higher.