#VU77582 Improper Authentication in FreeBSD - CVE-2023-3326
Published: June 21, 2023 / Updated: August 2, 2023
Vulnerability identifier: #VU77582
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-3326
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
FreeBSD
FreeBSD
Software vendor:
FreeBSD Foundation
FreeBSD Foundation
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in pam_krb5 module. A remote attacker with ability to control password and KDC responses can return a valid TGT ticket and bypass authentication process.
Successful exploitation of the vulnerability requires a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned.
Remediation
Install updates from vendor's website.