Total vulnerabilities in the database
pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a keytab is not provisioned on the system, pam_krb5 has no way to validate the response from the KDC, and essentially trusts the tgt provided over the network as being valid. In a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned, an attacker that is able to control both the password and the KDC responses can return a valid tgt, allowing authentication to occur for any user on the system.
| Software | From | Fixed in |
|---|---|---|
| freebsd / freebsd | 12.4-rc2-p2 | 12.4-rc2-p2.x |
| freebsd / freebsd | 12.4-rc2-p1 | 12.4-rc2-p1.x |
| freebsd / freebsd | 13.1-b1-p1 | 13.1-b1-p1.x |
| freebsd / freebsd | 13.1-b2-p2 | 13.1-b2-p2.x |
| freebsd / freebsd | 13.1-rc1-p1 | 13.1-rc1-p1.x |
| freebsd / freebsd | 13.1-p1 | 13.1-p1.x |
| freebsd / freebsd | 13.1-p2 | 13.1-p2.x |
| freebsd / freebsd | 13.1-p3 | 13.1-p3.x |
| freebsd / freebsd | 13.1-p4 | 13.1-p4.x |
| freebsd / freebsd | 13.1-p5 | 13.1-p5.x |
| freebsd / freebsd | 13.1 | 13.1.x |
| freebsd / freebsd | 12.4 | 12.4.x |
| freebsd / freebsd | 12.4-p1 | 12.4-p1.x |
| freebsd / freebsd | 12.4-p2 | 12.4-p2.x |
| freebsd / freebsd | - | 12.4 |
| freebsd / freebsd | 13.1-p6 | 13.1-p6.x |
| freebsd / freebsd | 13.1-p7 | 13.1-p7.x |
| freebsd / freebsd | 13.0 | 13.1 |
| freebsd / freebsd | 13.2 | 13.2.x |