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Fencer Intel
high 7.4

CVE-2017-12150 in the critical feed json

It was found that samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.6.8 did not enforce "SMB signing" when certain configuration…

published 2018-07-26 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3734

cvss
7.4
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
13.1%
EPSS 13.1% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

It was found that samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.6.8 did not enforce "SMB signing" when certain configuration options were enabled. A remote attacker could launch a man-in-the-middle attack and retrieve information in plain-text.

Patch / fix

  • samba samba 4.4.16, 4.5.14, 4.6.8
  • samba Debian 14, Debian 13, Debian 12 2:4.6.7+dfsg-2

debian advisories DEBIAN-CVE-2017-12150

  • samba Ubuntu 14.04 LTS 2:4.3.11+dfsg-0ubuntu0.14.04.12
  • samba Ubuntu 16.04 LTS 2:4.3.11+dfsg-0ubuntu0.16.04.11

ubuntu advisories UBUNTU-CVE-2017-12150

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 3.3 4.6.3-6.el6rhs
  • samba storage 3.3 4.6.3-6.el7rhgs
  • ctdb storage 3.3 4.6.3-6.el6rhs
  • ctdb storage 3.3 4.6.3-6.el7rhgs
  • samba-dc storage 3.3 4.6.3-6.el6rhs
  • samba-dc storage 3.3 4.6.3-6.el7rhgs
  • ctdb-tests storage 3.3 4.6.3-6.el6rhs
  • ctdb-tests storage 3.3 4.6.3-6.el7rhgs

red hat advisories RHSA-2017:2858RHSA-2017:2791RHSA-2017:2789RHSA-2017:2790

  • samba SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +3 more 4.6.9+git.59.c2cff9cea4c-3.17.1
  • samba SLES for SAP 12 SP2, SLES for SAP 12 SP1, SLES for Raspberry Pi 12 SP2 +5 more 4.2.4-28.21.1
  • samba SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 4.2.4-28.19.3
  • samba SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +3 more 3.6.3-94.5.1
  • samba SLES 12-LTSS, SLE High Availability Extension 12 4.2.4-18.44.2
  • samba SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +2 more 4.6.7+git.51.327af8d0a11-3.12.1
  • samba SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +3 more 4.4.2-38.11.2

suse advisories SUSE-SU-2017:3155-1SUSE-SU-2017:2971-1SUSE-SU-2017:2726-1SUSE-SU-2017:2715-1SUSE-SU-2017:2704-1SUSE-SU-2017:2695-1

  • samba openSUSE Tumbleweed 4.14.6+git.182.2205d5224e3-1.1

opensuse advisories openSUSE-SU-2024:11365-1

  • samba Alpine 3.24, Alpine 3.23, Alpine 3.22 +15 more 4.7.0-r0
  • samba Alpine 3.4 4.4.16-r0
  • samba Alpine 3.5 4.5.14-r0
  • samba Alpine 3.6 4.6.8-r0

alpine advisories ALPINE-CVE-2017-12150

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-45336

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-2017-12150 updated cvss 7.4

samba: Some code path don't enforce smb signing, when they should

  • Red Hat Enterprise Linux 5 samba, samba3x
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) samba 4.6.2-11.el7_4, samba-libs 4.6.2-11.el7_4, libwbclient 4.6.2-11.el7_4, libsmbclient 4.6.2-11.el7_4, samba-client 4.6.2-11.el7_4, samba-common 4.6.2-11.el7_4, +7 more Red Hat Enterprise Linux Client Optional (v. 7) samba 4.6.2-11.el7_4, samba-dc 4.6.2-11.el7_4, samba-pidl 4.6.2-11.el7_4, samba-test 4.6.2-11.el7_4, samba-python 4.6.2-11.el7_4, samba-dc-libs 4.6.2-11.el7_4, +3 more Red Hat Enterprise Linux ComputeNode (v. 7) samba 4.6.2-11.el7_4, samba-libs 4.6.2-11.el7_4, libwbclient 4.6.2-11.el7_4, libsmbclient 4.6.2-11.el7_4, samba-client 4.6.2-11.el7_4, samba-common 4.6.2-11.el7_4, +6 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) samba 4.6.2-11.el7_4, samba-dc 4.6.2-11.el7_4, samba-pidl 4.6.2-11.el7_4, samba-test 4.6.2-11.el7_4, samba-python 4.6.2-11.el7_4, samba-dc-libs 4.6.2-11.el7_4, +4 more
    fixed: vendor fix RHSA-2017:2790
  • Red Hat Enterprise Linux Desktop (v. 6) samba 3.6.23-45.el6_9, samba4 4.2.10-11.el6_9, samba4-dc 4.2.10-11.el6_9, samba4-libs 4.2.10-11.el6_9, samba4-pidl 4.2.10-11.el6_9, samba4-test 4.2.10-11.el6_9, +12 more Red Hat Enterprise Linux Desktop Optional (v. 6) samba 3.6.23-45.el6_9, samba-swat 3.6.23-45.el6_9, samba-glusterfs 3.6.23-45.el6_9, samba-domainjoin-gui 3.6.23-45.el6_9, samba-winbind-krb5-locator 3.6.23-45.el6_9 Red Hat Enterprise Linux HPC Node (v. 6) samba 3.6.23-45.el6_9, samba4 4.2.10-11.el6_9, samba4-dc 4.2.10-11.el6_9, samba4-libs 4.2.10-11.el6_9, samba4-pidl 4.2.10-11.el6_9, samba4-test 4.2.10-11.el6_9, +11 more Red Hat Enterprise Linux HPC Node Optional (v. 6) samba 3.6.23-45.el6_9, samba-swat 3.6.23-45.el6_9, libsmbclient 3.6.23-45.el6_9, samba-glusterfs 3.6.23-45.el6_9, samba-domainjoin-gui 3.6.23-45.el6_9, samba-winbind-krb5-locator 3.6.23-45.el6_9 Red Hat Enterprise Linux Server (v. 6) samba 3.6.23-45.el6_9, samba4 4.2.10-11.el6_9, samba4-dc 4.2.10-11.el6_9, samba4-libs 4.2.10-11.el6_9, samba4-pidl 4.2.10-11.el6_9, samba4-test 4.2.10-11.el6_9, +12 more
    fixed: vendor fix RHSA-2017:2789
  • Red Hat Enterprise Linux Server (v. 7) samba 4.6.2-11.el7_4, samba-libs 4.6.2-11.el7_4, libwbclient 4.6.2-11.el7_4, libsmbclient 4.6.2-11.el7_4, samba-client 4.6.2-11.el7_4, samba-common 4.6.2-11.el7_4, +8 more
    fixed: vendor fix RHSA-2017:2790
  • Red Hat Enterprise Linux Server Optional (v. 6) samba-swat 3.6.23-45.el6_9, samba-glusterfs 3.6.23-45.el6_9, samba-domainjoin-gui 3.6.23-45.el6_9, samba-winbind-krb5-locator 3.6.23-45.el6_9
    fixed: vendor fix RHSA-2017:2789
  • Red Hat Enterprise Linux Server Optional (v. 7) samba-dc 4.6.2-11.el7_4, samba-pidl 4.6.2-11.el7_4, samba-test 4.6.2-11.el7_4, samba-python 4.6.2-11.el7_4, samba-dc-libs 4.6.2-11.el7_4, samba-test-libs 4.6.2-11.el7_4, +2 more Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb 4.6.2-11.el7_4, ctdb-tests 4.6.2-11.el7_4
    fixed: vendor fix RHSA-2017:2790
  • Red Hat Enterprise Linux Workstation (v. 6) samba 3.6.23-45.el6_9, samba4 4.2.10-11.el6_9, samba4-dc 4.2.10-11.el6_9, samba4-libs 4.2.10-11.el6_9, samba4-pidl 4.2.10-11.el6_9, samba4-test 4.2.10-11.el6_9, +12 more
    fixed: vendor fix RHSA-2017:2789
  • Red Hat Enterprise Linux Workstation (v. 7) samba 4.6.2-11.el7_4, samba-libs 4.6.2-11.el7_4, libwbclient 4.6.2-11.el7_4, libsmbclient 4.6.2-11.el7_4, samba-client 4.6.2-11.el7_4, samba-common 4.6.2-11.el7_4, +8 more
    fixed: vendor fix RHSA-2017:2790
show 3 more
  • Red Hat Enterprise Linux Workstation Optional (v. 6) samba-swat 3.6.23-45.el6_9, samba-glusterfs 3.6.23-45.el6_9, samba-domainjoin-gui 3.6.23-45.el6_9, samba-winbind-krb5-locator 3.6.23-45.el6_9
    fixed: vendor fix RHSA-2017:2789
  • Red Hat Enterprise Linux Workstation Optional (v. 7) samba-dc 4.6.2-11.el7_4, samba-pidl 4.6.2-11.el7_4, samba-test 4.6.2-11.el7_4, samba-dc-libs 4.6.2-11.el7_4, samba-test-libs 4.6.2-11.el7_4, samba-vfs-glusterfs 4.6.2-11.el7_4, +1 more
    fixed: vendor fix RHSA-2017:2790
  • Red Hat Gluster 3.3 Samba on RHEL-6 ctdb 4.6.3-6.el6rhs, samba 4.6.3-6.el6rhs, samba-dc 4.6.3-6.el6rhs, ctdb-tests 4.6.3-6.el6rhs, samba-libs 4.6.3-6.el6rhs, samba-pidl 4.6.3-6.el6rhs, +17 more Red Hat Gluster 3.3 Samba on RHEL-7 ctdb 4.6.3-6.el7rhgs, samba 4.6.3-6.el7rhgs, samba-dc 4.6.3-6.el7rhgs, ctdb-tests 4.6.3-6.el7rhgs, samba-libs 4.6.3-6.el7rhgs, samba-pidl 4.6.3-6.el7rhgs, +17 more
    fixed: vendor fix RHSA-2017:2858

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

Exploit prediction

13.06% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.4 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

  • Samba samba

Classification

Weakness
  • CWE-300 Channel Accessible by Non-Endpoint

References

Sources

Fencer Intel 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.