CyberRota Analysis
AI-GeneratedApache MINA SSHD versions up to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 are vulnerable due to a flaw in the sshd-core component that allows an attacker to bypass multi-authentication requirements by presenting the same public key twice. This partial authentication bypass could lead to unauthorized access, making it critical for users of affected versions to upgrade to 2.20.0 or 3.0.0-M6 immediately. Organizations relying on Apache MINA SSHD for SSH services should prioritize this update to mitigate potential security risks.
Original NVD Description
Apache MINA SSHD is a Java library for client-side and server-side SSH. SSH servers can be configured to require multi-authentication schemes, for instance two different public keys, not just one. In OpenSSH, this would be done by setting in sshd_config AuthenticationMethods "publickey,publickey". Apache MINA SSHD provides an equivalent configuration mechanism. In Apache MINA SSHD versions up to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 the server code in component sshd-core does not enforce that the two public keys presented are different. A user can thus successfully authenticate with only one of the two key pairs required by presenting this single key twice. This is a partial authentication bypass. Users are recommended to upgrade to version 2.20.0 or 3.0.0-M6, which fix this issue.