Description
A flaw was found in Samba, all versions starting samba 4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2, in the way it handles a user password change or a new password for a samba user. The Samba Active Directory Domain Controller can be configured to use a custom script to check for password complexity. This configuration can fail to verify password complexity when non-ASCII characters are used in the password, which could lead to weak passwords being set for samba users, making it vulnerable to dictionary attacks.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Samba | samba | all versions starting samba 4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2 | — |
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 | 2:4.11.1+dfsg-2 | — |
| Debian 13 | samba | 2:4.11.1+dfsg-2 | — |
| Debian 12 | samba | 2:4.11.1+dfsg-2 | — |
| Debian 10 | samba | 2:4.9.5+dfsg-5+deb10u4 | DLA-3563-1 |
| Debian 9 | samba | 2:4.5.16+dfsg-1+deb9u4 | DLA-2668-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | samba | 2:4.7.6+dfsg~ubuntu-0ubuntu2.13 | USN-4167-1 |
| Ubuntu 16.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.16.04.23 | USN-4167-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | samba | 4.9.5+git.210.ab0549acb05-3.14.1 | SUSE-SU-2019:2866-1 |
| SLES 15 | samba | 4.7.11+git.186.d75219614c3-4.30.1 | SUSE-SU-2019:2868-1 |
| SLES 12 SP5 | ldb | 1.5.8-3.5.1 | SUSE-SU-2020:2673-1 |
| SLES 12 SP5 | samba | 4.10.17+git.203.862547088ca-3.14.1 | SUSE-SU-2020:2673-1 |
| SLES 2 | samba | 4.9.5+git.210.ab0549acb05-3.14.1 | SUSE-SU-2019:2866-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | ldb | 1.5.8-3.5.1 | SUSE-SU-2020:2673-1 |
| SLES for SAP 12 SP5 | samba | 4.10.17+git.203.862547088ca-3.14.1 | SUSE-SU-2020:2673-1 |
| SUSE Enterprise Storage 6 | samba | 4.9.5+git.210.ab0549acb05-3.14.1 | SUSE-SU-2019:2866-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.14.6+git.182.2205d5224e3-1.1 | openSUSE-SU-2024:11365-1 |
| openSUSE Leap 15.1 | samba | 4.9.5+git.210.ab0549acb05-lp151.2.9.1 | openSUSE-SU-2019:2442-1 |
| openSUSE Leap 15.0 | samba | 4.7.11+git.186.d75219614c3-lp150.3.18.2 | openSUSE-SU-2019:2458-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | samba | 4.11.2-r0 | — |
| Alpine v3.23 | samba | 4.11.2-r0 | — |
| Alpine v3.22 | samba | 4.11.2-r0 | — |
| Alpine v3.21 | samba | 4.11.2-r0 | — |
| Alpine v3.20 | samba | 4.11.2-r0 | — |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.11.2-r0 | — |
| Alpine v3.18 | samba | 4.11.2-r0 | — |
| Alpine v3.17 | samba | 4.11.2-r0 | — |
| Alpine v3.16 | samba | 4.11.2-r0 | — |
| Alpine v3.15 | samba | 4.11.2-r0 | — |
| Alpine v3.14 | samba | 4.11.2-r0 | — |
| Alpine v3.13 | samba | 4.11.2-r0 | — |
| Alpine v3.12 | samba | 4.11.2-r0 | — |
| Alpine v3.11 | samba | 4.11.2-r0 | — |
| Alpine v3.10 | samba | 4.10.10-r0 | — |
| Alpine v3.9 | samba | 4.8.12-r1 | — |
| Alpine v3.8 | samba | 4.8.12-r1 | — |
Advisories 10
- USN-4167-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-3563-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2668-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2019:2458-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2673-1 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
- openSUSE-SU-2019:2442-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2866-1 Security update for samba SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:2868-1 Security update for samba SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-2366 Samba: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 14, 2023
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14833
- https://www.samba.org/samba/security/CVE-2019-14833.html
- https://www.synology.com/security/advisory/Synology_SA_19_35
- openSUSE-SU-2019:2458 vendor-advisory
- FEDORA-2019-57d43f3b58 vendor-advisory
- FEDORA-2019-703e299870 vendor-advisory
- FEDORA-2019-460ad648e7 vendor-advisory
- [debian-lts-announce] 20210529 [SECURITY] [DLA 2668-1] samba security update mailing-list
- [debian-lts-announce] 20230914 [SECURITY] [DLA 3563-1] samba security update mailing-list