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.
Published: 2023-11-07
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-5525-1 samba security update
EUVD EUVD EUVD-2023-54034 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.
Ubuntu USN Ubuntu USN USN-6425-1 Samba vulnerabilities
Ubuntu USN Ubuntu USN USN-6425-3 Samba vulnerabilities
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Redhat Enterprise Linux Storage
Samba Samba
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-02T07:17:12.144Z

Reserved: 2023-08-04T13:22:07.200Z

Link: CVE-2023-4154

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-11-07T20:15:08.683

Modified: 2024-11-21T08:34:29.827

Link: CVE-2023-4154

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-10-10T00:00:00Z

Links: CVE-2023-4154 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses