CVE-2018-1057

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-03-13 · updated 2026-06-17
Weakness: CWE-863

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

Canonical Ubuntu Linux: 14.04, 16.04, 17.10
Debian Linux: 8.0
Samba: from 4.0.0 before 4.5.16; from 4.6.0 before 4.6.14; from 4.7.0 before 4.7.6 — fixed in 4.5.16, 4.6.14, 4.7.6

How to fix

Upgrade to a fixed version: Samba 4.5.16, 4.6.14, 4.7.6. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/103382
http://www.securitytracker.com/id/1040494
https://bugzilla.redhat.com/show_bug.cgi?id=1553553
https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html
https://security.gentoo.org/glsa/201805-07
https://security.netapp.com/advisory/ntap-20180313-0001/
https://usn.ubuntu.com/3595-1/
https://www.debian.org/security/2018/dsa-4135
https://www.samba.org/samba/security/CVE-2018-1057.html
https://www.synology.com/support/security/Synology_SA_18_08
http://www.securityfocus.com/bid/103382
http://www.securitytracker.com/id/1040494

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