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TI-2016-01943 Aliases CVE-2016-2119GHSA-6hfw-45v2-4p3j

libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x…

Priority LOW 38CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-94.

Summary

libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.

Why it matters now

EPSS 0.03097 87th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*4.0.0 to before 4.2.14; 4.3.0 to before 4.3.11; 4.4.0 to before 4.4.5VulnerableSamba
  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.2.14; 4.3.0 to before 4.3.11; 4.4.0 to before 4.4.5 Vulnerable ·Samba

Remediation

Red Hat 3 advisories

  • RHSA-2016:1494 Released 2016-07-26 · Red Hat rating Moderate
    samba security update
    • Red Hat Gluster 3 Samba on RHEL-6 ctdb-4.4.3-8.el6rhs, ctdb-tests-4.4.3-8.el6rhs, libsmbclient-4.4.3-8.el6rhs +22
    • Red Hat Gluster 3 Samba on RHEL-7 ctdb-4.4.3-8.el7rhgs, ctdb-tests-4.4.3-8.el7rhgs, libsmbclient-4.4.3-8.el7rhgs +22
  • RHSA-2016:1486 Released 2016-07-26 · Red Hat rating Moderate
    samba security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) libsmbclient-4.2.10-7.el7_2, libwbclient-4.2.10-7.el7_2, samba-4.2.10-7.el7_2 +9
    • Red Hat Enterprise Linux Client Optional (v. 7) libsmbclient-devel-4.2.10-7.el7_2, libwbclient-devel-4.2.10-7.el7_2, samba-4.2.10-7.el7_2 +10
    • Red Hat Enterprise Linux ComputeNode (v. 7) libsmbclient-4.2.10-7.el7_2, libwbclient-4.2.10-7.el7_2, samba-4.2.10-7.el7_2 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsmbclient-devel-4.2.10-7.el7_2, libwbclient-devel-4.2.10-7.el7_2, samba-4.2.10-7.el7_2 +10
    • Red Hat Enterprise Linux Server (v. 7) libsmbclient-4.2.10-7.el7_2, libsmbclient-4.2.10-7.el7_2.ppc, libwbclient-4.2.10-7.el7_2 +15
    • Red Hat Enterprise Linux Server Optional (v. 7) libsmbclient-devel-4.2.10-7.el7_2, libsmbclient-devel-4.2.10-7.el7_2.ppc, libwbclient-devel-4.2.10-7.el7_2 +13
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb-4.2.10-7.el7_2, ctdb-devel-4.2.10-7.el7_2, ctdb-tests-4.2.10-7.el7_2
    • Red Hat Enterprise Linux Workstation (v. 7) libsmbclient-4.2.10-7.el7_2, libwbclient-4.2.10-7.el7_2, samba-4.2.10-7.el7_2 +10
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libsmbclient-devel-4.2.10-7.el7_2, libwbclient-devel-4.2.10-7.el7_2, samba-dc-4.2.10-7.el7_2 +8
  • RHSA-2016:1487 Released 2016-07-26 · Red Hat rating Moderate
    samba4 security update
    • Red Hat Enterprise Linux Desktop (v. 6) samba4-4.2.10-7.el6_8, samba4-client-4.2.10-7.el6_8, samba4-common-4.2.10-7.el6_8 +10
    • Red Hat Enterprise Linux HPC Node (v. 6) samba4-4.2.10-7.el6_8, samba4-client-4.2.10-7.el6_8, samba4-common-4.2.10-7.el6_8 +10
    • Red Hat Enterprise Linux Server (v. 6) samba4-4.2.10-7.el6_8, samba4-client-4.2.10-7.el6_8, samba4-common-4.2.10-7.el6_8 +10
    • Red Hat Enterprise Linux Workstation (v. 6) samba4-4.2.10-7.el6_8, samba4-client-4.2.10-7.el6_8, samba4-common-4.2.10-7.el6_8 +10

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:1487
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2016:1487
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1487
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1487
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1486
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1486
Red Hat Gluster 3 Samba on RHEL-6Fixed RHSA-2016:1494
Red Hat Gluster 3 Samba on RHEL-7Fixed RHSA-2016:1494
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-2119
  2. 2026-10-03 Alias added: GHSA-6hfw-45v2-4p3j

References

Advisory 7

  • 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