Description
On a Samba 4 AD DC the LDAP server in all versions of Samba from 4.0.0 onwards incorrectly validates permissions to modify passwords over LDAP allowing authenticated users to change any other users' passwords, including administrative users and privileged service accounts (eg Domain Controllers).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Samba | Samba | All versions of Samba from 4.0.0 onwards. | — |
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 | 2:4.7.4+dfsg-2 | — |
| Debian 13 | samba | 2:4.7.4+dfsg-2 | — |
| Debian 12 | samba | 2:4.7.4+dfsg-2 | — |
| Debian 9 | samba | 2:4.5.12+dfsg-2+deb9u2 | DSA-4135-1 |
| Debian 8 | samba | 2:4.2.14+dfsg-0+deb8u12 | DLA-1754-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.16.04.13 | USN-3595-1 |
| Ubuntu 14.04 LTS | samba | 2:4.3.11+dfsg-0ubuntu0.14.04.14 | USN-3595-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | samba | 4.6.14+git.150.1540e575faf-3.24.1 | SUSE-SU-2018:1687-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | samba | 4.6.14+git.150.1540e575faf-3.24.1 | SUSE-SU-2018:1687-1 |
| SUSE Enterprise Storage 5 | samba | 4.6.14+git.150.1540e575faf-3.24.1 | SUSE-SU-2018:1687-1 |
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 | 4.7.6-r0 | — |
| Alpine v3.23 | samba | 4.7.6-r0 | — |
| Alpine v3.22 | samba | 4.7.6-r0 | — |
| Alpine v3.21 | samba | 4.7.6-r0 | — |
| Alpine v3.20 | samba | 4.7.6-r0 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | samba | 4.7.6-r0 | — |
| Alpine v3.18 | samba | 4.7.6-r0 | — |
| Alpine v3.17 | samba | 4.7.6-r0 | — |
| Alpine v3.16 | samba | 4.7.6-r0 | — |
| Alpine v3.15 | samba | 4.7.6-r0 | — |
| Alpine v3.14 | samba | 4.7.6-r0 | — |
| Alpine v3.13 | samba | 4.7.6-r0 | — |
| Alpine v3.12 | samba | 4.7.6-r0 | — |
| Alpine v3.11 | samba | 4.7.6-r0 | — |
| Alpine v3.10 | samba | 4.7.6-r0 | — |
| Alpine v3.9 | samba | 4.7.6-r0 | — |
| Alpine v3.8 | samba | 4.7.6-r0 | — |
| Alpine v3.7 | samba | 4.7.6-r0 | — |
| Alpine v3.6 | samba | 4.6.14-r0 | — |
| Alpine v3.5 | samba | 4.5.16-r0 | — |
| Alpine v3.4 | samba | 4.4.16-r2 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | samba | 4.12.5-6 | — |
Advisories 5
- USN-3595-1 samba vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1754-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4135-1 samba - security update Debian Security (DSA / DLA) · Mar 9, 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-2018:1687-1 Security update for samba SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 103382 vdb-entry
- DSA-4135 vendor-advisory
- USN-3595-1 vendor-advisory
- 1040494 vdb-entry
- GLSA-201805-07 vendor-advisory
- https://security.netapp.com/advisory/ntap-20180313-0001/
- https://www.samba.org/samba/security/CVE-2018-1057.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1553553
- https://www.synology.com/support/security/Synology_SA_18_08
- [debian-lts-announce] 20190409 [SECURITY] [DLA 1754-1] samba security update mailing-list