UBUNTU-CVE-2023-3326

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Source
https://ubuntu.com/security/CVE-2023-3326
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-3326.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-3326
Upstream
Published
2023-06-22T17:15:00Z
Modified
2025-07-14T06:35:21.078975Z
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
  • - low
Summary
[none]
Details

pamkrb5 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, pamkrb5 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

Ubuntu:Pro:14.04:LTS / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.6-2ubuntu0.1~esm1?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.6-2
4.6-2ubuntu0.1~esm1

Ubuntu:Pro:16.04:LTS / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.7-2ubuntu0.1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.7-2
4.7-2ubuntu0.1

Ubuntu:Pro:16.04:LTS / sssd

Package

Name
sssd
Purl
pkg:deb/ubuntu/sssd@1.13.4-1ubuntu1.15?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.12.5-2
1.13.1-2
1.13.2-1
1.13.3-1
1.13.4-1
1.13.4-1ubuntu1
1.13.4-1ubuntu1.1
1.13.4-1ubuntu1.2
1.13.4-1ubuntu1.5
1.13.4-1ubuntu1.6
1.13.4-1ubuntu1.7
1.13.4-1ubuntu1.8
1.13.4-1ubuntu1.9
1.13.4-1ubuntu1.10
1.13.4-1ubuntu1.11
1.13.4-1ubuntu1.12
1.13.4-1ubuntu1.13
1.13.4-1ubuntu1.14
1.13.4-1ubuntu1.15

Ubuntu:Pro:18.04:LTS / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.8-1ubuntu0.1?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.7-4
4.8-1
4.8-1ubuntu0.1

Ubuntu:Pro:18.04:LTS / sssd

Package

Name
sssd
Purl
pkg:deb/ubuntu/sssd@1.16.1-1ubuntu1.8?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.15.3-2ubuntu1
1.15.3-3ubuntu1
1.16.0-5ubuntu1
1.16.0-5ubuntu2
1.16.1-1ubuntu1
1.16.1-1ubuntu1.1
1.16.1-1ubuntu1.2
1.16.1-1ubuntu1.3
1.16.1-1ubuntu1.4
1.16.1-1ubuntu1.5
1.16.1-1ubuntu1.6
1.16.1-1ubuntu1.7
1.16.1-1ubuntu1.8

Ubuntu:Pro:20.04:LTS / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.8-2ubuntu1?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.8-2
4.8-2ubuntu1

Ubuntu:Pro:20.04:LTS / sssd

Package

Name
sssd
Purl
pkg:deb/ubuntu/sssd@2.2.3-3ubuntu0.13?arch=source&distro=esm-infra/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.2.0-4ubuntu1
2.2.2-1
2.2.2-1ubuntu1
2.2.3-1.1ubuntu1
2.2.3-2
2.2.3-3
2.2.3-3ubuntu0.1
2.2.3-3ubuntu0.2
2.2.3-3ubuntu0.3
2.2.3-3ubuntu0.4
2.2.3-3ubuntu0.6
2.2.3-3ubuntu0.7
2.2.3-3ubuntu0.8
2.2.3-3ubuntu0.9
2.2.3-3ubuntu0.10
2.2.3-3ubuntu0.11
2.2.3-3ubuntu0.12
2.2.3-3ubuntu0.13

Ubuntu:22.04:LTS / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.11-1build1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.9-2build1
4.11-1
4.11-1build1

Ubuntu:22.04:LTS / sssd

Package

Name
sssd
Purl
pkg:deb/ubuntu/sssd@2.6.3-1ubuntu3.5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.4.1-2ubuntu4
2.5.2-4ubuntu1
2.5.2-4ubuntu3
2.5.2-4ubuntu4
2.6.1-1ubuntu3
2.6.3-1ubuntu3
2.6.3-1ubuntu3.1
2.6.3-1ubuntu3.2
2.6.3-1ubuntu3.3
2.6.3-1ubuntu3.4
2.6.3-1ubuntu3.5

Ubuntu:24.04:LTS / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.11-1build3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.11-1build1
4.11-1build2
4.11-1build3

Ubuntu:24.04:LTS / sssd

Package

Name
sssd
Purl
pkg:deb/ubuntu/sssd@2.9.4-1.1ubuntu6.2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.1-2ubuntu2
2.9.1-2ubuntu3
2.9.2-1ubuntu2
2.9.4-1ubuntu1
2.9.4-1.1ubuntu3
2.9.4-1.1ubuntu5
2.9.4-1.1ubuntu6
2.9.4-1.1ubuntu6.1
2.9.4-1.1ubuntu6.2

Ubuntu:25.04 / libpam-krb5

Package

Name
libpam-krb5
Purl
pkg:deb/ubuntu/libpam-krb5@4.11-2?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.11-2

Ubuntu:25.04 / sssd

Package

Name
sssd
Purl
pkg:deb/ubuntu/sssd@2.10.1-2ubuntu4?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.9.5-3ubuntu2
2.10.1-2ubuntu2
2.10.1-2ubuntu3
2.10.1-2ubuntu4