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TI-2020-15731 Aliases CVE-2020-25717GHSA-fv5q-mr4m-w2qm

Improper input validation in samba

Priority LOW 39CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 20 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.

Why it matters now

EPSS 0.01625 76th percentileScored 2026-11-07
Fix Partial Red Hat: 8 advisoriesRed Hat: 20 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—sambasamba 4.15.2, samba 4.14.10, samba 4.13.14—No fix listedCNA
  • samba Vendor— Affected samba 4.15.2, samba 4.14.10, samba 4.13.14 Fixed in — No fix listed CNA

CPE configurations NVD · 42

CPEVersionsRoleVendor
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*3.0.0 to before 4.13.14; 4.14.0 to before 4.14.10; 4.15.0 to before 4.15.2VulnerableSamba
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:gluster_storage:3.0:*:*:*:*:*:*:*3.0VulnerableRed Hat
cpe:2.3:a:redhat:gluster_storage:3.5:*:*:*:*:*:*:*3.5VulnerableRed Hat
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*13VulnerableRed Hat
  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions 3.0.0 to before 4.13.14; 4.14.0 to before 4.14.10; 4.15.0 to before 4.15.2 Vulnerable ·Samba
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:gluster_storage:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:gluster_storage:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Red Hat
Show 32 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:redhat:openstack:16.1:*:*:*:*:*:*:*16.1VulnerableRed Hat
cpe:2.3:a:redhat:openstack:16.2:*:*:*:*:*:*:*16.2VulnerableRed Hat
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_resilient_storage:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*20.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:*21.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*21.10VulnerableCanonical
  • cpe:2.3:a:redhat:openstack:16.1:*:*:*:*:*:*:* Versions 16.1 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openstack:16.2:*:*:*:*:*:*:* Versions 16.2 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_resilient_storage:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:* Versions 21.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:* Versions 21.10 Vulnerable ·Canonical

Remediation

Red Hat 8 advisories

  • RHSA-2022:0443 Released 2022-02-07 · Red Hat rating Important
    RHV-H security update (redhat-virtualization-host) 4.3.21
    • RHEL 7-based RHEV-H for RHEV 4 (build requirements) redhat-virtualization-host-4.3.21-20220126.0.el7_9, redhat-virtualization-host-image-update-4.3.21-20220126.0.el7_9
    • Red Hat Virtualization 4 Hypervisor for RHEL 7 redhat-virtualization-host-4.3.21-20220126.0.el7_9, redhat-virtualization-host-image-update-4.3.21-20220126.0.el7_9
  • RHSA-2022:0133 Released 2022-01-12 · Red Hat rating Important
    Red Hat Virtualization Host security and bug fix update [ovirt-4.4.9] Async #2
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 redhat-virtualization-host-4.4.9-202201072228_8.5, redhat-virtualization-host-image-update-4.4.9-202201072228_8.5
  • RHSA-2022:0074 Released 2022-01-11 · Red Hat rating Important
    samba security update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) libsmbclient-devel-4.11.2-18.el8_2, libwbclient-devel-4.11.2-18.el8_2
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) ctdb-4.11.2-18.el8_2, ctdb-tests-4.11.2-18.el8_2, libsmbclient-4.11.2-18.el8_2 +18
Show 5 more Red Hat advisories
  • RHSA-2022:0008 Released 2022-01-04 · Red Hat rating Important
    samba security update
    • Red Hat Enterprise Linux BaseOS EUS (v.8.4) ctdb-4.13.3-8.el8_4, ctdb-tests-4.13.3-8.el8_4, libsmbclient-4.13.3-8.el8_4 +19
    • Red Hat Enterprise Linux CRB EUS (v.8.4) libsmbclient-devel-4.13.3-8.el8_4, libwbclient-devel-4.13.3-8.el8_4, samba-devel-4.13.3-8.el8_4
  • RHSA-2021:5192 Released 2021-12-16 · Red Hat rating Important
    samba security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) libsmbclient-4.10.16-17.el7_9, libwbclient-4.10.16-17.el7_9, samba-4.10.16-17.el7_9 +10
    • Red Hat Enterprise Linux Client Optional (v. 7) libsmbclient-devel-4.10.16-17.el7_9, libwbclient-devel-4.10.16-17.el7_9, samba-4.10.16-17.el7_9 +10
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsmbclient-devel-4.10.16-17.el7_9, libwbclient-devel-4.10.16-17.el7_9, samba-4.10.16-17.el7_9 +11
    • Red Hat Enterprise Linux Server (v. 7) libsmbclient-4.10.16-17.el7_9, libsmbclient-4.10.16-17.el7_9.ppc, libwbclient-4.10.16-17.el7_9 +17
    • Red Hat Enterprise Linux Server Optional (v. 7) libsmbclient-devel-4.10.16-17.el7_9, libsmbclient-devel-4.10.16-17.el7_9.ppc, libwbclient-devel-4.10.16-17.el7_9 +14
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb-4.10.16-17.el7_9, ctdb-tests-4.10.16-17.el7_9
    • Red Hat Enterprise Linux Workstation (v. 7) libsmbclient-4.10.16-17.el7_9, libwbclient-4.10.16-17.el7_9, samba-4.10.16-17.el7_9 +11
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libsmbclient-devel-4.10.16-17.el7_9, libwbclient-devel-4.10.16-17.el7_9, samba-dc-4.10.16-17.el7_9 +8
  • RHSA-2021:5082 Released 2021-12-13 · Red Hat rating Important
    samba security update
    • Red Hat CodeReady Linux Builder (v. 8) libsmbclient-devel-4.14.5-7.el8_5, libwbclient-devel-4.14.5-7.el8_5, samba-devel-4.14.5-7.el8_5
    • Red Hat Enterprise Linux AppStream (v. 8) samba-vfs-iouring-4.14.5-7.el8_5
    • Red Hat Enterprise Linux BaseOS (v. 8) ctdb-4.14.5-7.el8_5, libsmbclient-4.14.5-7.el8_5, libwbclient-4.14.5-7.el8_5 +18
  • RHSA-2021:4844 Released 2021-11-29 · Red Hat rating Important
    samba security update
    • Red Hat Gluster 3.5 Samba on RHEL-7 ctdb-4.11.6-114.el7rhgs, libsmbclient-4.11.6-114.el7rhgs, libsmbclient-devel-4.11.6-114.el7rhgs +18
  • RHSA-2021:4843 Released 2021-11-29 · Red Hat rating Important
    samba security update
    • Red Hat Gluster 3.5 Samba on RHEL-8 ctdb-4.14.5-204.el8rhgs, libsmbclient-4.14.5-204.el8rhgs, libsmbclient-devel-4.14.5-204.el8rhgs +18

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
RHEL 7-based RHEV-H for RHEV 4 (build requirements)Fixed RHSA-2022:0443
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:5082
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2022:0074
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:5082
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:5082
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2022:0074
Red Hat Enterprise Linux BaseOS EUS (v.8.4)Fixed RHSA-2022:0008
Red Hat Enterprise Linux CRB EUS (v.8.4)Fixed RHSA-2022:0008
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:5192
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:5192
Red Hat Gluster 3.5 Samba on RHEL-7Fixed RHSA-2021:4844
Red Hat Gluster 3.5 Samba on RHEL-8Fixed RHSA-2021:4843
Red Hat Virtualization 4 Hypervisor for RHEL 7Fixed RHSA-2022:0443
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2022:0133
Not affected: 3 products
  • RHEL 7-based RHEV-H for RHEV 4 (build requirements)
  • RHEL 8-based RHEV-H for RHEV 4 (build requirements)
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25717
  2. 2026-10-03 Alias added: GHSA-fv5q-mr4m-w2qm

References

Patch 1

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences