Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Samba | samba | 4.6.8, 4.5.14, 4.4.16, 4.7.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | samba | 2:4.6.7+dfsg-2 | — |
| Debian 13 | samba | 2:4.6.7+dfsg-2 | — |
| Debian 12 | samba | 2:4.6.7+dfsg-2 | — |
| Debian 9 | samba | 2:4.5.8+dfsg-2+deb9u2 | DSA-3983-1 |
| Debian 8 | samba | 2:4.2.14+dfsg-0+deb8u8 | DSA-3983-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | samba | 2:3.6.6-6+deb7u14 | DLA-1110-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.16.04.11 | USN-3426-1 |
| Ubuntu 14.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.14.04.12 | USN-3426-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ctdb +25 | 4.6.2-11.el7_4 | RHSA-2017:2790 |
| RHEL 6 | samba +12 | 3.6.23-45.el6_9 | RHSA-2017:2789 |
| RHEL 6 | samba4 +12 | 4.2.10-11.el6_9 | RHSA-2017:2791 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Gluster Storage 3 | ctdb +25 | 4.6.3-6.el6rhs | RHSA-2017:2858 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | samba | 4.6.7+git.51.327af8d0a11-3.12.1 | SUSE-SU-2017:3155-1, SUSE-SU-2017:2695-1 |
| SLES 12 SP2 | samba | 4.2.4-28.21.1 | SUSE-SU-2017:2971-1, SUSE-SU-2017:2650-1 |
| SLES 12 SP1 | samba | 4.2.4-28.19.3 | SUSE-SU-2017:2971-1, SUSE-SU-2017:2726-1 |
| SLES 12 | samba | 4.2.4-18.44.2 | SUSE-SU-2017:2704-1 |
| SLES 11 SP4 | samba +1 | 3.6.3-94.5.1 | SUSE-SU-2017:2715-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | samba +1 | 3.6.3-94.5.1 | SUSE-SU-2017:2715-1 |
| SLES for SAP 12 SP3 | samba | 4.6.7+git.51.327af8d0a11-3.12.1 | SUSE-SU-2017:3155-1, SUSE-SU-2017:2695-1 |
| SLES for SAP 12 SP2 | samba | 4.2.4-28.21.1 | SUSE-SU-2017:2971-1, SUSE-SU-2017:2650-1 |
| SLES for SAP 12 SP1 | samba | 4.2.4-28.19.3 | SUSE-SU-2017:2971-1, SUSE-SU-2017:2726-1 |
| SLES for SAP 11 SP4 | samba +1 | 3.6.3-94.5.1 | SUSE-SU-2017:2715-1 |
| SUSE OpenStack Cloud 6 | samba | 4.2.4-28.19.3 | SUSE-SU-2017:2971-1, SUSE-SU-2017:2726-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | samba +1 | 3.6.3-94.5.1 | SUSE-SU-2017:2715-1 |
| SUSE Enterprise Storage 5 | samba | 4.6.9+git.59.c2cff9cea4c-3.17.1 | SUSE-SU-2017:3155-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.14.6+git.182.2205d5224e3-1.1 | openSUSE-SU-2024:11365-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | samba | 4.7.0-r0 | — |
| Alpine v3.23 | samba | 4.7.0-r0 | — |
| Alpine v3.22 | samba | 4.7.0-r0 | — |
| Alpine v3.21 | samba | 4.7.0-r0 | — |
| Alpine v3.20 | samba | 4.7.0-r0 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.7.0-r0 | — |
| Alpine v3.18 | samba | 4.7.0-r0 | — |
| Alpine v3.17 | samba | 4.7.0-r0 | — |
| Alpine v3.16 | samba | 4.7.0-r0 | — |
| Alpine v3.15 | samba | 4.7.0-r0 | — |
| Alpine v3.14 | samba | 4.7.0-r0 | — |
| Alpine v3.13 | samba | 4.7.0-r0 | — |
| Alpine v3.12 | samba | 4.7.0-r0 | — |
| Alpine v3.11 | samba | 4.7.0-r0 | — |
| Alpine v3.10 | samba | 4.7.0-r0 | — |
| Alpine v3.9 | samba | 4.7.0-r0 | — |
| Alpine v3.8 | samba | 4.7.0-r0 | — |
| Alpine v3.7 | samba | 4.7.0-r0 | — |
| Alpine v3.6 | samba | 4.6.8-r0 | — |
| Alpine v3.5 | samba | 4.5.14-r0 | — |
| Alpine v3.4 | samba | 4.4.16-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | samba | 4.18.3-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ctdb +25 | 4.6.2-11.el7_4 | ELSA-2017-2790 |
Advisories 16
- RHSA-2017:2858 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:2790 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:2791 Red Hat Security Advisory: samba4 security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- RHSA-2017:2789 Red Hat Security Advisory: samba security update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3426-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3983-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1110-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:3155-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2695-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11365-1 ctdb-4.14.6+git.182.2205d5224e3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2715-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2971-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2726-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2704-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2650-1 Security update for samba SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2017-2790 Moderate: samba security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 26, 2017
References
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03775en_us
- https://security.netapp.com/advisory/ntap-20170921-0001/
- RHSA-2017:2790 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12150
- 100918 vdb-entry
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_us
- https://www.samba.org/samba/security/CVE-2017-12150.html
- DSA-3983 vendor-advisory
- RHSA-2017:2858 vendor-advisory
- 1039401 vdb-entry
- RHSA-2017:2789 vendor-advisory
- RHSA-2017:2791 vendor-advisory