CVE-2023-3326
Severity CVSS v4.0:
Pending analysis
Type:
CWE-287
Authentication Issues
Publication date:
22/06/2023
Last modified:
01/08/2023
Description
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.<br />
Impact
Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | 12.4 (excluding) | |
| cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | 13.0 (including) | 13.1 (excluding) |
| cpe:2.3:o:freebsd:freebsd:12.4:-:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:12.4:p1:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:12.4:p2:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:12.4:rc2-p1:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:12.4:rc2-p2:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:-:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:b1-p1:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:b2-p2:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:p1:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:p2:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:p3:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:p4:*:*:*:*:*:* | ||
| cpe:2.3:o:freebsd:freebsd:13.1:p5:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page