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Fencer Vulns
medium 4.3

CVE-2020-14318 json

A flaw was found in the way samba handled file and directory permissions.

published 2020-12-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-6469

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.

Patch / fix

  • samba samba 4.11.15, 4.12.9, 4.13.1
  • samba Debian 14, Debian 13, Debian 12 2:4.13.2+dfsg-2

debian advisories DEBIAN-CVE-2020-14318

  • samba Ubuntu 16.04 LTS 2:4.3.11+dfsg-0ubuntu0.16.04.32
  • samba Ubuntu 18.04 LTS 2:4.7.6+dfsg~ubuntu-0ubuntu2.21
  • samba Ubuntu 20.04 LTS 2:4.11.6+dfsg-0ubuntu1.6
  • samba Ubuntu Pro 14.04 LTS 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11

ubuntu advisories UBUNTU-CVE-2020-14318

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • samba storage 3.5 4.11.6-112.el7rhgs
  • ctdb storage 3.5 4.11.6-112.el7rhgs
  • samba-libs storage 3.5 4.11.6-112.el7rhgs
  • samba-pidl storage 3.5 4.11.6-112.el7rhgs
  • libwbclient storage 3.5 4.11.6-112.el7rhgs
  • libsmbclient storage 3.5 4.11.6-112.el7rhgs
  • samba-client storage 3.5 4.11.6-112.el7rhgs
  • samba-common storage 3.5 4.11.6-112.el7rhgs

red hat advisories RHSA-2021:3723RHBA-2021:1503RHSA-2021:1647RHSA-2020:5439

  • samba Enterprise Storage 7 4.13.3+git.181.fc4672a5b81-3.3.1
  • samba SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 3.6.3-94.31.1
  • samba SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4-LTSS +10 more 4.6.16+git.248.c833312e640-3.58.1
  • samba SLE Module for Python 2 15 SP1, SLE Module for Basesystem 15 SP1, SLE High Availability Extension 15 SP1 +1 more 4.9.5+git.383.7b7f8f14df8-3.47.1
  • samba SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +2 more 4.7.11+git.280.25dfd9a947d-4.51.1
  • samba SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.2-38.39.1
  • samba SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 +1 more 4.10.18+git.219.1d732314d96-3.20.1
  • samba SLE Module for Python 2 15 SP2, SLE Module for Basesystem 15 SP2, SLE High Availability Extension 15 SP2 4.11.14+git.202.344b137b75d-4.14.1

suse advisories SUSE-SU-2021:0185-1SUSE-SU-2020:14525-1SUSE-SU-2020:3093-1SUSE-SU-2020:3092-1SUSE-SU-2020:3087-1SUSE-SU-2020:3083-1

  • samba openSUSE Tumbleweed 4.14.6+git.182.2205d5224e3-1.1
  • samba openSUSE Leap 15.2 4.11.14+git.202.344b137b75d-lp152.3.16.1
  • samba openSUSE Leap 15.1 4.9.5+git.383.7b7f8f14df8-lp151.2.36.1

opensuse advisories openSUSE-SU-2024:11365-1openSUSE-SU-2020:1819-1openSUSE-SU-2020:1811-1

  • openchange AlmaLinux 8 2.3-27.el8

almalinux advisories ALSA-2021:1647

  • samba Rocky Linux 8 4.13.3-3.el8
  • openchange Rocky Linux 8 2.3-27.el8

rocky linux advisories RLSA-2021:1647

  • samba Alpine 3.11 4.11.16-r0
  • samba Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 4.12.9-r0

alpine advisories ALPINE-CVE-2020-14318

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • samba Azure Linux 3.0 4.18.3-1

azure linux advisories AZL-36988

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-14318 updated cvss 4.3

samba: Missing handle permissions check in SMB1/2/3 ChangeNotify

  • Red Hat Enterprise Linux 6 samba, samba-swat, libsmbclient, samba-client, samba-common, samba-winbind, +4 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) samba-devel 4.13.3-3.el8, ctdb-debuginfo 4.13.3-3.el8, samba-debuginfo 4.13.3-3.el8, libwbclient-devel 4.13.3-3.el8, samba-debugsource 4.13.3-3.el8, libsmbclient-devel 4.13.3-3.el8, +18 more Red Hat Enterprise Linux AppStream (v. 8) openchange 2.3-27.el8 Red Hat Enterprise Linux BaseOS (v. 8) ctdb 4.13.3-3.el8, samba 4.13.3-3.el8, ctdb-tests 4.13.3-3.el8, samba-libs 4.13.3-3.el8, samba-pidl 4.13.3-3.el8, samba-test 4.13.3-3.el8, +16 more
    fixed: vendor fix RHSA-2021:1647
  • Red Hat Enterprise Linux Client (v. 7) samba 4.10.16-9.el7_9, samba-libs 4.10.16-9.el7_9, libwbclient 4.10.16-9.el7_9, libsmbclient 4.10.16-9.el7_9, samba-client 4.10.16-9.el7_9, samba-common 4.10.16-9.el7_9, +7 more Red Hat Enterprise Linux Client Optional (v. 7) samba 4.10.16-9.el7_9, samba-dc 4.10.16-9.el7_9, samba-pidl 4.10.16-9.el7_9, samba-test 4.10.16-9.el7_9, samba-python 4.10.16-9.el7_9, samba-dc-libs 4.10.16-9.el7_9, +4 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) samba 4.10.16-9.el7_9, samba-dc 4.10.16-9.el7_9, samba-pidl 4.10.16-9.el7_9, samba-test 4.10.16-9.el7_9, samba-python 4.10.16-9.el7_9, samba-dc-libs 4.10.16-9.el7_9, +5 more Red Hat Enterprise Linux Server (v. 7) samba 4.10.16-9.el7_9, samba-libs 4.10.16-9.el7_9, libwbclient 4.10.16-9.el7_9, libsmbclient 4.10.16-9.el7_9, samba-client 4.10.16-9.el7_9, samba-common 4.10.16-9.el7_9, +8 more Red Hat Enterprise Linux Server Optional (v. 7) samba-dc 4.10.16-9.el7_9, samba-pidl 4.10.16-9.el7_9, samba-test 4.10.16-9.el7_9, samba-python 4.10.16-9.el7_9, samba-dc-libs 4.10.16-9.el7_9, samba-test-libs 4.10.16-9.el7_9, +3 more Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb 4.10.16-9.el7_9, ctdb-tests 4.10.16-9.el7_9
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) samba 4.10.16-9.el7_9, samba-libs 4.10.16-9.el7_9, libwbclient 4.10.16-9.el7_9, libsmbclient 4.10.16-9.el7_9, samba-client 4.10.16-9.el7_9, samba-common 4.10.16-9.el7_9, +8 more Red Hat Enterprise Linux Workstation Optional (v. 7) samba-dc 4.10.16-9.el7_9, samba-pidl 4.10.16-9.el7_9, samba-test 4.10.16-9.el7_9, samba-dc-libs 4.10.16-9.el7_9, samba-test-libs 4.10.16-9.el7_9, samba-python-test 4.10.16-9.el7_9, +2 more
    fixed: vendor fix RHSA-2020:5439
  • Red Hat Gluster 3.5 Samba on RHEL-7 ctdb 4.11.6-112.el7rhgs, samba 4.11.6-112.el7rhgs, samba-libs 4.11.6-112.el7rhgs, samba-pidl 4.11.6-112.el7rhgs, libwbclient 4.11.6-112.el7rhgs, libsmbclient 4.11.6-112.el7rhgs, +12 more
    fixed: vendor fix RHSA-2021:3723
  • Red Hat Gluster 3.5 Samba on RHEL-8 ctdb 4.13.7-101.el8rhgs, samba 4.13.7-101.el8rhgs, samba-libs 4.13.7-101.el8rhgs, samba-pidl 4.13.7-101.el8rhgs, libwbclient 4.13.7-101.el8rhgs, libsmbclient 4.13.7-101.el8rhgs, +12 more
    fixed: vendor fix RHBA-2021:1503

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.54% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • n/a samba
  • redhat storage
  • redhat enterprise_linux

Classification

Weakness
  • CWE-266 Incorrect Privilege Assignment
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.