Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 4.0.0, < 4.17.12 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2023-4154Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241883Issue Tracking
- https://bugzilla.samba.org/show_bug.cgi?id=15424Issue TrackingPatch
- https://security.netapp.com/advisory/ntap-20231124-0002/
- https://www.samba.org/samba/security/CVE-2023-4154.htmlVendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-4154Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241883Issue Tracking
- https://bugzilla.samba.org/show_bug.cgi?id=15424Issue TrackingPatch
- https://security.netapp.com/advisory/ntap-20231124-0002/
- https://www.samba.org/samba/security/CVE-2023-4154.htmlVendor Advisory
FAQ
What is CVE-2023-4154?
CVE-2023-4154 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 allow...
How severe is CVE-2023-4154?
CVE-2023-4154 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-4154?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba.