PT-2023-4089 · Pam Krb5+2 · Pam Krb5+2

Riastradh · Published 2023-06-21 · Updated 2025-12-25 · CVE-2023-3326

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions pam krb5 (affected versions not specified)

Description The issue is related to the incorrect implementation of the authentication algorithm in the pam krb5 module. This allows an attacker to gain unauthorized access to the system by controlling the password and Kerberos KDC responses, returning a valid ticket-granting ticket (tgt) and enabling authentication for any user on the system. The vulnerability is particularly relevant in non-default FreeBSD installations that use pam krb5 for authentication without a provisioned keytab.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authentication

Weakness Enumeration

CWE-303

CWE-287

Related Identifiers

BDU:2023-04390

CVE-2023-3326

FREEBSD-SA-23_04

FREEBSD-SA-23_09

Affected Products

Debian

Freebsd

Pam Krb5

References · 15

• https://cve.org/CVERecord?id=CVE-2023-3326 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-3326 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-3326 · Vendor Advisory
• https://security.freebsd.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-3326 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-3326 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-3326 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-04390 · Security Note
• https://security.freebsd.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-3326 · Vendor Advisory
• https://vuldb.com/ru/?id.232171 · Note
• https://security.netapp.com/advisory/ntap-20230714-0005 · Note
• https://freebsd.org/security/advisories/FreeBSD-SA-23:09.pam_krb5.asc · Note
• https://seclists.org/oss-sec/2023/q2/245 · Note
• https://freebsd.org/security/advisories/FreeBSD-SA-23:04.pam_krb5.asc · Note