CVE-2023-4154

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CVE-2023-4154

Summary: Samba: ad dc password exposure to privileged users and rodcs

Details: 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.

References: https://access.redhat.com/downloads/content/package-browser/, https://packages.fedoraproject.org/, https://www.samba.org/samba/security/CVE-2023-4154.html, https://access.redhat.com/security/cve/CVE-2023-4154, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4154.json, https://nvd.nist.gov/vuln/detail/CVE-2023-4154, https://security.netapp.com/advisory/ntap-20231124-0002/, https://bugzilla.redhat.com/show_bug.cgi?id=2241883, https://bugzilla.samba.org/show_bug.cgi?id=15424