DEBIAN-CVE-2023-3326
- Source
- https://security-tracker.debian.org/tracker/CVE-2023-3326
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-3326.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2023-3326
- Upstream
- Published
- 2023-06-22T17:15:44Z
- Modified
- 2026-09-15T09:02:04Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:12 / libpam-krb5
Package
- Name
- libpam-krb5
- Purl
- pkg:deb/debian/libpam-krb5?arch=source&distro=bookworm
Debian:13 / libpam-krb5
Package
- Name
- libpam-krb5
- Purl
- pkg:deb/debian/libpam-krb5?arch=source&distro=trixie
Debian:14 / libpam-krb5
Package
- Name
- libpam-krb5
- Purl
- pkg:deb/debian/libpam-krb5?arch=source&distro=forky