UBUNTU-CVE-2020-14323

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Source

https://ubuntu.com/security/CVE-2020-14323

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14323.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-14323

Upstream

CVE-2020-14323

Downstream

USN-4611-1

USN-4931-1

Related

Published

2020-10-29T00:00:00Z

Modified

2025-10-14T16:49:38Z

Severity

5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.

References

Affected packages

Ubuntu:Pro:14.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11?arch=source&distro=trusty/esm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11

Affected versions

2:3.*

2:3.6.18-1ubuntu3

2:4.*

2:4.0.10+dfsg-4ubuntu2

2:4.0.13+dfsg-1ubuntu1

2:4.1.3+dfsg-2ubuntu2

2:4.1.3+dfsg-2ubuntu3

2:4.1.3+dfsg-2ubuntu4

2:4.1.3+dfsg-2ubuntu5

2:4.1.6+dfsg-1ubuntu1

2:4.1.6+dfsg-1ubuntu2

2:4.1.6+dfsg-1ubuntu2.14.04.1

2:4.1.6+dfsg-1ubuntu2.14.04.2

2:4.1.6+dfsg-1ubuntu2.14.04.3

2:4.1.6+dfsg-1ubuntu2.14.04.4

2:4.1.6+dfsg-1ubuntu2.14.04.5

2:4.1.6+dfsg-1ubuntu2.14.04.7

2:4.1.6+dfsg-1ubuntu2.14.04.8

2:4.1.6+dfsg-1ubuntu2.14.04.9

2:4.1.6+dfsg-1ubuntu2.14.04.11

2:4.1.6+dfsg-1ubuntu2.14.04.12

2:4.1.6+dfsg-1ubuntu2.14.04.13

2:4.3.8+dfsg-0ubuntu0.14.04.2

2:4.3.9+dfsg-0ubuntu0.14.04.1

2:4.3.9+dfsg-0ubuntu0.14.04.3

2:4.3.11+dfsg-0ubuntu0.14.04.1

2:4.3.11+dfsg-0ubuntu0.14.04.2

2:4.3.11+dfsg-0ubuntu0.14.04.3

2:4.3.11+dfsg-0ubuntu0.14.04.4

2:4.3.11+dfsg-0ubuntu0.14.04.6

2:4.3.11+dfsg-0ubuntu0.14.04.7

2:4.3.11+dfsg-0ubuntu0.14.04.8

2:4.3.11+dfsg-0ubuntu0.14.04.9

2:4.3.11+dfsg-0ubuntu0.14.04.10

2:4.3.11+dfsg-0ubuntu0.14.04.11

2:4.3.11+dfsg-0ubuntu0.14.04.12

2:4.3.11+dfsg-0ubuntu0.14.04.13

2:4.3.11+dfsg-0ubuntu0.14.04.14

2:4.3.11+dfsg-0ubuntu0.14.04.16

2:4.3.11+dfsg-0ubuntu0.14.04.17

2:4.3.11+dfsg-0ubuntu0.14.04.19

2:4.3.11+dfsg-0ubuntu0.14.04.20

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm3

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8

2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libpam-smbpass"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libparse-pidl-perl"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libsmbsharemodes-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libsmbsharemodes0"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "python-samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
            "binary_name": "winbind"
        }
    ]
}

Ubuntu:16.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.32?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.3.11+dfsg-0ubuntu0.16.04.32

Affected versions

2:4.*

2:4.1.17+dfsg-4ubuntu2

2:4.1.20+dfsg-1ubuntu1

2:4.1.20+dfsg-1ubuntu2

2:4.1.20+dfsg-1ubuntu3

2:4.1.20+dfsg-1ubuntu5

2:4.3.3+dfsg-1ubuntu1

2:4.3.3+dfsg-1ubuntu2

2:4.3.3+dfsg-1ubuntu3

2:4.3.6+dfsg-1ubuntu1

2:4.3.8+dfsg-0ubuntu1

2:4.3.9+dfsg-0ubuntu0.16.04.1

2:4.3.9+dfsg-0ubuntu0.16.04.2

2:4.3.9+dfsg-0ubuntu0.16.04.3

2:4.3.11+dfsg-0ubuntu0.16.04.1

2:4.3.11+dfsg-0ubuntu0.16.04.3

2:4.3.11+dfsg-0ubuntu0.16.04.5

2:4.3.11+dfsg-0ubuntu0.16.04.6

2:4.3.11+dfsg-0ubuntu0.16.04.7

2:4.3.11+dfsg-0ubuntu0.16.04.8

2:4.3.11+dfsg-0ubuntu0.16.04.9

2:4.3.11+dfsg-0ubuntu0.16.04.10

2:4.3.11+dfsg-0ubuntu0.16.04.11

2:4.3.11+dfsg-0ubuntu0.16.04.12

2:4.3.11+dfsg-0ubuntu0.16.04.13

2:4.3.11+dfsg-0ubuntu0.16.04.15

2:4.3.11+dfsg-0ubuntu0.16.04.16

2:4.3.11+dfsg-0ubuntu0.16.04.17

2:4.3.11+dfsg-0ubuntu0.16.04.18

2:4.3.11+dfsg-0ubuntu0.16.04.19

2:4.3.11+dfsg-0ubuntu0.16.04.20

2:4.3.11+dfsg-0ubuntu0.16.04.21

2:4.3.11+dfsg-0ubuntu0.16.04.23

2:4.3.11+dfsg-0ubuntu0.16.04.24

2:4.3.11+dfsg-0ubuntu0.16.04.25

2:4.3.11+dfsg-0ubuntu0.16.04.26

2:4.3.11+dfsg-0ubuntu0.16.04.27

2:4.3.11+dfsg-0ubuntu0.16.04.28

2:4.3.11+dfsg-0ubuntu0.16.04.29

2:4.3.11+dfsg-0ubuntu0.16.04.30

2:4.3.11+dfsg-0ubuntu0.16.04.31

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libparse-pidl-perl"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "python-samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32",
            "binary_name": "winbind"
        }
    ]
}

Ubuntu:18.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.21?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.7.6+dfsg~ubuntu-0ubuntu2.21

Affected versions

2:4.*

2:4.6.7+dfsg-1ubuntu3

2:4.7.1+dfsg-1ubuntu1

2:4.7.3+dfsg-1ubuntu1

2:4.7.4+dfsg-1ubuntu1

2:4.7.6+dfsg~ubuntu-0ubuntu1

2:4.7.6+dfsg~ubuntu-0ubuntu2

2:4.7.6+dfsg~ubuntu-0ubuntu2.2

2:4.7.6+dfsg~ubuntu-0ubuntu2.4

2:4.7.6+dfsg~ubuntu-0ubuntu2.5

2:4.7.6+dfsg~ubuntu-0ubuntu2.6

2:4.7.6+dfsg~ubuntu-0ubuntu2.7

2:4.7.6+dfsg~ubuntu-0ubuntu2.9

2:4.7.6+dfsg~ubuntu-0ubuntu2.10

2:4.7.6+dfsg~ubuntu-0ubuntu2.11

2:4.7.6+dfsg~ubuntu-0ubuntu2.13

2:4.7.6+dfsg~ubuntu-0ubuntu2.14

2:4.7.6+dfsg~ubuntu-0ubuntu2.15

2:4.7.6+dfsg~ubuntu-0ubuntu2.16

2:4.7.6+dfsg~ubuntu-0ubuntu2.17

2:4.7.6+dfsg~ubuntu-0ubuntu2.18

2:4.7.6+dfsg~ubuntu-0ubuntu2.19

2:4.7.6+dfsg~ubuntu-0ubuntu2.20

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libparse-pidl-perl"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "python-samba"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21",
            "binary_name": "winbind"
        }
    ]
}

Ubuntu:20.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.11.6+dfsg-0ubuntu1.6?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.11.6+dfsg-0ubuntu1.6

Affected versions

2:4.*

2:4.10.7+dfsg-0ubuntu2

2:4.10.7+dfsg-0ubuntu3

2:4.11.1+dfsg-3ubuntu1

2:4.11.1+dfsg-3ubuntu2

2:4.11.1+dfsg-3ubuntu4

2:4.11.5+dfsg-1ubuntu1

2:4.11.5+dfsg-1ubuntu2

2:4.11.6+dfsg-0ubuntu1

2:4.11.6+dfsg-0ubuntu1.1

2:4.11.6+dfsg-0ubuntu1.2

2:4.11.6+dfsg-0ubuntu1.3

2:4.11.6+dfsg-0ubuntu1.4

2:4.11.6+dfsg-0ubuntu1.5

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "python3-samba"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.6",
            "binary_name": "winbind"
        }
    ]
}