samba: Samba based active directory domain controller does not enforce smb signing
Published Apr 25, 2016
5.9
MEDIUMCVSS 3.0
EPSS 2.60%
Description
The SMB1 protocol implementation in Samba 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not recognize the "server signing = mandatory" setting, which allows man-in-the-middle attackers to spoof SMB servers by modifying the client-server data stream.
Affected products
No data.
Configuration 1
- 4.0.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.0.5
- 4.0.6
- 4.0.7
- 4.0.8
- 4.0.9
- 4.0.10
- 4.0.11
- 4.0.12
- 4.0.13
- 4.0.14
- 4.0.15
- 4.0.16
- 4.0.17
- 4.0.18
- 4.0.19
- 4.0.20
- 4.0.21
- 4.0.22
- 4.0.23
- 4.0.24
- 4.0.25
- 4.0.26
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6
- 4.1.7
- 4.1.8
- 4.1.9
- 4.1.10
- 4.1.11
- 4.1.12
- 4.1.13
- 4.1.14
- 4.1.15
- 4.1.16
- 4.1.17
- 4.1.18
- 4.1.19
- 4.1.20
- 4.1.21
- 4.1.22
- 4.1.23
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.2.4
- 4.2.5
- 4.2.6
- 4.2.7
- 4.2.8
- 4.2.9
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.3.5
- 4.3.6
- 4.4.0
Configuration 2
- 14.04
- 15.10
- 16.04
No data.
Red Hat Enterprise Linux 6
ipa-0:3.0.0-47.el6_7.2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6
libldb-0:1.1.25-2.el6_7
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6
libtalloc-0:2.1.5-1.el6_7
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6
libtdb-0:1.3.8-1.el6_7
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6
libtevent-0:0.9.26-2.el6_7
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6
openchange-0:1.0-7.el6_7
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6
samba4-0:4.2.10-6.el6_7
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 6.2 Advanced Update Support
evolution-mapi-0:0.28.3-8.el6_2
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.2 Advanced Update Support
libldb-0:1.1.25-2.el6_2
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.2 Advanced Update Support
openchange-0:1.0-1.el6_2
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.2 Advanced Update Support
samba4-0:4.2.10-6.el6_2
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.2 Advanced Update Support
sssd-0:1.5.1-66.el6_2.5
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.4 Advanced Update Support
ipa-0:3.0.0-26.el6_4.5
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.4 Advanced Update Support
libldb-0:1.1.25-2.el6_4
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.4 Advanced Update Support
openchange-0:1.0-5.el6_4
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.4 Advanced Update Support
samba4-0:4.2.10-6.el6_4
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.4 Advanced Update Support
sssd-0:1.9.2-82.12.el6_4
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.5 Advanced Update Support
ipa-0:3.0.0-37.el6_5.1
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.5 Advanced Update Support
libldb-0:1.1.25-2.el6_5
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.5 Advanced Update Support
openchange-0:1.0-7.el6_5
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.5 Advanced Update Support
samba4-0:4.2.10-6.el6_5
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.5 Advanced Update Support
sssd-0:1.9.2-129.el6_5.7
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.6 Extended Update Support
ipa-0:3.0.0-42.el6_6.1
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.6 Extended Update Support
libldb-0:1.1.25-2.el6_6
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.6 Extended Update Support
openchange-0:1.0-7.el6_6
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 6.6 Extended Update Support
samba4-0:4.2.10-6.el6_6
Fixed · RHSA-2016:0620
Red Hat Enterprise Linux 7
ipa-0:4.2.0-15.el7_2.6.1
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7
libldb-0:1.1.25-1.el7_2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7
libtalloc-0:2.1.5-1.el7_2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7
libtdb-0:1.3.8-1.el7_2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7
libtevent-0:0.9.26-1.el7_2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7
openchange-0:2.0-10.el7_2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7
samba-0:4.2.10-6.el7_2
Fixed · RHSA-2016:0612
Red Hat Enterprise Linux 7.1 Extended Update Support
ipa-0:4.1.0-18.ael7b_1.6
Fixed · RHSA-2016:0618
Red Hat Enterprise Linux 7.1 Extended Update Support
libldb-0:1.1.25-1.ael7b_1
Fixed · RHSA-2016:0618
Red Hat Enterprise Linux 7.1 Extended Update Support
libtalloc-0:2.1.5-1.ael7b_1
Fixed · RHSA-2016:0618
Red Hat Enterprise Linux 7.1 Extended Update Support
libtdb-0:1.3.8-1.ael7b_1
Fixed · RHSA-2016:0618
Red Hat Enterprise Linux 7.1 Extended Update Support
libtevent-0:0.9.26-1.ael7b_1
Fixed · RHSA-2016:0618
Red Hat Enterprise Linux 7.1 Extended Update Support
openchange-0:2.0-4.ael7b_1.1
Fixed · RHSA-2016:0618
Red Hat Enterprise Linux 7.1 Extended Update Support
samba-0:4.2.10-5.ael7b_1
Fixed · RHSA-2016:0618
Red Hat Gluster Storage 3.1 for RHEL 6
libldb-0:1.1.24-1.el6rhs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 6
libtalloc-0:2.1.5-1.el6rhs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 6
libtdb-0:1.3.8-1.el6rhs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 6
libtevent-0:0.9.26-1.el6rhs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 6
samba-0:4.2.11-2.el6rhs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 7
libldb-0:1.1.24-1.el7rhgs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 7
libtalloc-0:2.1.5-1.el7rhgs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 7
libtdb-0:1.3.8-1.el7rhgs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 7
libtevent-0:0.9.26-1.el7rhgs
Fixed · RHSA-2016:0614
Red Hat Gluster Storage 3.1 for RHEL 7
samba-0:4.2.11-2.el7rhgs
Fixed · RHSA-2016:0614
Red Hat Enterprise Linux 4
samba
Not affected
Red Hat Enterprise Linux 5
samba
Not affected
Red Hat Enterprise Linux 5
samba3x
Not affected
Red Hat Enterprise Linux 6
samba
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | ipa-0:3.0.0-47.el6_7.2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6 | libldb-0:1.1.25-2.el6_7 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6 | libtalloc-0:2.1.5-1.el6_7 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6 | libtdb-0:1.3.8-1.el6_7 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6 | libtevent-0:0.9.26-2.el6_7 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6 | openchange-0:1.0-7.el6_7 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6 | samba4-0:4.2.10-6.el6_7 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | evolution-mapi-0:0.28.3-8.el6_2 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | libldb-0:1.1.25-2.el6_2 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | openchange-0:1.0-1.el6_2 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | samba4-0:4.2.10-6.el6_2 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | sssd-0:1.5.1-66.el6_2.5 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | ipa-0:3.0.0-26.el6_4.5 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | libldb-0:1.1.25-2.el6_4 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | openchange-0:1.0-5.el6_4 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | samba4-0:4.2.10-6.el6_4 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | sssd-0:1.9.2-82.12.el6_4 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | ipa-0:3.0.0-37.el6_5.1 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | libldb-0:1.1.25-2.el6_5 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | openchange-0:1.0-7.el6_5 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | samba4-0:4.2.10-6.el6_5 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | sssd-0:1.9.2-129.el6_5.7 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.6 Extended Update Support | ipa-0:3.0.0-42.el6_6.1 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.6 Extended Update Support | libldb-0:1.1.25-2.el6_6 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.6 Extended Update Support | openchange-0:1.0-7.el6_6 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 6.6 Extended Update Support | samba4-0:4.2.10-6.el6_6 | Fixed | RHSA-2016:0620 |
| Red Hat Enterprise Linux 7 | ipa-0:4.2.0-15.el7_2.6.1 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7 | libldb-0:1.1.25-1.el7_2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7 | libtalloc-0:2.1.5-1.el7_2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7 | libtdb-0:1.3.8-1.el7_2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7 | libtevent-0:0.9.26-1.el7_2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7 | openchange-0:2.0-10.el7_2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7 | samba-0:4.2.10-6.el7_2 | Fixed | RHSA-2016:0612 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | ipa-0:4.1.0-18.ael7b_1.6 | Fixed | RHSA-2016:0618 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | libldb-0:1.1.25-1.ael7b_1 | Fixed | RHSA-2016:0618 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | libtalloc-0:2.1.5-1.ael7b_1 | Fixed | RHSA-2016:0618 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | libtdb-0:1.3.8-1.ael7b_1 | Fixed | RHSA-2016:0618 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | libtevent-0:0.9.26-1.ael7b_1 | Fixed | RHSA-2016:0618 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | openchange-0:2.0-4.ael7b_1.1 | Fixed | RHSA-2016:0618 |
| Red Hat Enterprise Linux 7.1 Extended Update Support | samba-0:4.2.10-5.ael7b_1 | Fixed | RHSA-2016:0618 |
| Red Hat Gluster Storage 3.1 for RHEL 6 | libldb-0:1.1.24-1.el6rhs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 6 | libtalloc-0:2.1.5-1.el6rhs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 6 | libtdb-0:1.3.8-1.el6rhs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 6 | libtevent-0:0.9.26-1.el6rhs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 6 | samba-0:4.2.11-2.el6rhs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 7 | libldb-0:1.1.24-1.el7rhgs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 7 | libtalloc-0:2.1.5-1.el7rhgs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 7 | libtdb-0:1.3.8-1.el7rhgs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 7 | libtevent-0:0.9.26-1.el7rhgs | Fixed | RHSA-2016:0614 |
| Red Hat Gluster Storage 3.1 for RHEL 7 | samba-0:4.2.11-2.el7rhgs | Fixed | RHSA-2016:0614 |
| Red Hat Enterprise Linux 4 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 5 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 5 | samba3x | Not affected | n/a |
| Red Hat Enterprise Linux 6 | samba | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.60% (0.02601) | 84.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.60% (0.02601) | 83.28th | v5 (v2026.06.15) |
| May 2, 2026 | 5.86% (0.05863) | 90.60th | v4 (v2025.03.14) |
| Apr 15, 2025 | 8.89% (0.08894) | 92.03th | v4 (v2025.03.14) |
| Mar 30, 2025 | 11.49% (0.11489) | 92.97th | v4 (v2025.03.14) |
| Mar 29, 2025 | 17.06% (0.17061) | 91.70th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.58% (0.11578) | 93.09th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00264) | 66.59th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.26% (0.00264) | 65.15th | v3 (v2023.03.01) |
| Jun 17, 2023 | 0.26% (0.00264) | 62.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00186) | 54.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (30)
- http://badlock.org/ x_refsource_MISC
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2016-0612.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-0614.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-0618.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-0620.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2016/dsa-3548 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/86011 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1035533 vdb-entryx_refsource_SECTRACK
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012 vendor-advisoryx_refsource_SLACKWARE
- http://www.ubuntu.com/usn/USN-2950-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2950-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2950-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2950-4 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2950-5 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/articles/2243351
- https://access.redhat.com/security/cve/CVE-2016-2114 Vendor Advisory
- https://bto.bluecoat.com/security-advisory/sa122 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1312082 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-2114
- https://security.gentoo.org/glsa/201612-47 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-2114
- https://www.samba.org/samba/history/samba-4.2.10.html x_refsource_CONFIRM
- https://www.samba.org/samba/latest_news.html#4.4.2 x_refsource_CONFIRM
- https://www.samba.org/samba/security/CVE-2016-2114.html x_refsource_CONFIRMPatchVendor Advisory
Change history (0)
No recorded changes yet.