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TI-2018-00971 Aliases CVE-2018-1050GHSA-mfgj-gxgx-gcc4

NULL pointer dereference in Samba

Priority LOW 29CWE-476Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

All versions of Samba from 4.0.0 onwards are vulnerable to a denial of service attack when the RPC spoolss service is configured to be run as an external daemon. Missing input sanitization checks on some of the input parameters to spoolss RPC calls could cause the print spooler service to crash.

Why it matters now

EPSS 0.06515 93rd percentileScored 2026-11-07
Fix Fixed Red Hat: 5 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
SambaSambaAll versions of Samba from 4.0.0 onwards—No fix listedCNA
  • Samba VendorSamba Affected All versions of Samba from 4.0.0 onwards Fixed in — No fix listed CNA

CPE configurations NVD · 14

CPEVersionsRoleVendor
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:lts:*:*:*17.10VulnerableCanonical
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*3.6.0 to before 4.5.16; 4.6.0 to before 4.6.14; 4.7.0 to before 4.7.6VulnerableSamba
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:lts:*:*:* Versions 17.10 Vulnerable ·Canonical
  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions 3.6.0 to before 4.5.16; 4.6.0 to before 4.6.14; 4.7.0 to before 4.7.6 Vulnerable ·Samba
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 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_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 5 advisories

  • RHSA-2018:3056 Released 2018-10-30 · Red Hat rating Moderate
    samba security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) libsmbclient-4.8.3-4.el7, libwbclient-4.8.3-4.el7, samba-4.8.3-4.el7 +10
    • Red Hat Enterprise Linux Client Optional (v. 7) libsmbclient-devel-4.8.3-4.el7, libwbclient-devel-4.8.3-4.el7, samba-4.8.3-4.el7 +10
    • Red Hat Enterprise Linux ComputeNode (v. 7) libsmbclient-4.8.3-4.el7, libwbclient-4.8.3-4.el7, samba-4.8.3-4.el7 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsmbclient-devel-4.8.3-4.el7, libwbclient-devel-4.8.3-4.el7, samba-4.8.3-4.el7 +11
    • Red Hat Enterprise Linux Server (v. 7) libsmbclient-4.8.3-4.el7, libsmbclient-4.8.3-4.el7.ppc, libwbclient-4.8.3-4.el7 +16
    • Red Hat Enterprise Linux Server Optional (v. 7) libsmbclient-devel-4.8.3-4.el7, libsmbclient-devel-4.8.3-4.el7.ppc, libwbclient-devel-4.8.3-4.el7 +13
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb-4.8.3-4.el7, ctdb-tests-4.8.3-4.el7
    • Red Hat Enterprise Linux Workstation (v. 7) libsmbclient-4.8.3-4.el7, libwbclient-4.8.3-4.el7, samba-4.8.3-4.el7 +11
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libsmbclient-devel-4.8.3-4.el7, libwbclient-devel-4.8.3-4.el7, samba-dc-4.8.3-4.el7 +8
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) libsmbclient-4.8.3-4.el7, libwbclient-4.8.3-4.el7, samba-4.8.3-4.el7 +11
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) libsmbclient-devel-4.8.3-4.el7, libwbclient-devel-4.8.3-4.el7, samba-dc-4.8.3-4.el7 +8
  • RHSA-2018:2613 Released 2018-09-04 · Red Hat rating Moderate
    samba security, bug fix and enhancement update
    • Red Hat Gluster 3.4 Samba on RHEL-7 ctdb-4.7.5-110.el7rhgs, libsmbclient-4.7.5-110.el7rhgs, libsmbclient-devel-4.7.5-110.el7rhgs +31
  • RHSA-2018:2612 Released 2018-09-04 · Red Hat rating Moderate
    samba security, bug fix and enhancement update
    • Red Hat Gluster 3.4 Samba on RHEL-6 ctdb-4.7.5-110.el6rhs, libsmbclient-4.7.5-110.el6rhs, libsmbclient-devel-4.7.5-110.el6rhs +31
Show 2 more Red Hat advisories
  • RHSA-2018:1860 Released 2018-06-19 · Red Hat rating Low
    samba security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) libsmbclient-3.6.23-51.el6, samba-3.6.23-51.el6, samba-client-3.6.23-51.el6 +3
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libsmbclient-devel-3.6.23-51.el6, samba-3.6.23-51.el6, samba-doc-3.6.23-51.el6 +5
    • Red Hat Enterprise Linux HPC Node (v. 6) samba-3.6.23-51.el6, samba-client-3.6.23-51.el6, samba-common-3.6.23-51.el6 +2
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) libsmbclient-3.6.23-51.el6, libsmbclient-devel-3.6.23-51.el6, samba-3.6.23-51.el6 +6
    • Red Hat Enterprise Linux Server (v. 6) libsmbclient-3.6.23-51.el6, libsmbclient-3.6.23-51.el6.ppc, samba-3.6.23-51.el6 +6
    • Red Hat Enterprise Linux Server Optional (v. 6) libsmbclient-devel-3.6.23-51.el6, libsmbclient-devel-3.6.23-51.el6.ppc, samba-doc-3.6.23-51.el6 +6
    • Red Hat Enterprise Linux Workstation (v. 6) libsmbclient-3.6.23-51.el6, samba-3.6.23-51.el6, samba-client-3.6.23-51.el6 +3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) libsmbclient-devel-3.6.23-51.el6, samba-doc-3.6.23-51.el6, samba-domainjoin-gui-3.6.23-51.el6 +4
  • RHSA-2018:1883 Released 2018-06-19 · Red Hat rating Low
    samba4 security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) samba4-4.2.10-15.el6, samba4-client-4.2.10-15.el6, samba4-common-4.2.10-15.el6 +10
    • Red Hat Enterprise Linux HPC Node (v. 6) samba4-4.2.10-15.el6, samba4-client-4.2.10-15.el6, samba4-common-4.2.10-15.el6 +10
    • Red Hat Enterprise Linux Server (v. 6) samba4-4.2.10-15.el6, samba4-client-4.2.10-15.el6, samba4-common-4.2.10-15.el6 +10
    • Red Hat Enterprise Linux Workstation (v. 6) samba4-4.2.10-15.el6, samba4-client-4.2.10-15.el6, samba4-common-4.2.10-15.el6 +10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Samba — USN-3595-1

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    Show all 2 records → Advisory →
  • Advisory ·

    Samba — DSA-4135

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    Show all 2 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2018:1860, RHSA-2018:1883
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2018:1860
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2018:1860, RHSA-2018:1883
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2018:1860
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:1860, RHSA-2018:1883
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2018:1860
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:1860, RHSA-2018:1883
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2018:1860
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:3056
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:3056
Red Hat Gluster 3.4 Samba on RHEL-6Fixed RHSA-2018:2612
Red Hat Gluster 3.4 Samba on RHEL-7Fixed RHSA-2018:2613
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1050
  2. 2026-10-03 Alias added: GHSA-mfgj-gxgx-gcc4

References

Advisory 16

  • TI-2020-01431 Netlogon Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2017-05139 Code injection in samba KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-00210 The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x… CVSS 2.0HIGH 10.0
  • TI-2003-00081 Buffer overflow in the SMB/CIFS packet fragment re-assembly code for SMB daemon (smbd) in… CVSS 2.0HIGH 10.0
  • TI-2003-00185 Buffer overflow in the call_trans2open function in trans2.c for Samba 2.2.x before… CVSS 2.0HIGH 10.0
  • TI-2007-02362 Multiple heap-based buffer overflows in the NDR parsing in smbd in Samba 3.0.0 through… CVSS 2.0HIGH 10.0
See all 215 →

Sources

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