The auth_via_key function in pam_ssh.c in pam_ssh before 1.92, when the allow_blank_passphrase option is disabled, allows remote attackers to bypass authentication restrictions and use private encryption keys requiring a blank passphrase by entering a non-blank passphrase.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pam_ssh | Pam_ssh | 1.91 (including) | 1.91 (including) |