← Back to CVEs

CVE-2023-3326

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published6/22/2023

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

freebsd:freebsd

Weaknesses (CWE)

CWE-303CWE-287

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc(secteam@freebsd.org)

https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc(secteam@freebsd.org)

https://security.netapp.com/advisory/ntap-20230714-0005/(secteam@freebsd.org)

https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc(af854a3a-2127-422b-91ae-364da2661108)

https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20230714-0005/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.