CVEvulnerability

CVE-2023-4154

6.5 MEDIUM Published 2023-11-07 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-11-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-787

Description

A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence.

Affected configurations

• samba samba (>= 4.0.0 < 4.17.12) • samba samba (>= 4.18.0 < 4.18.8) • samba samba (>= 4.19.0 < 4.19.1)

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References