Vulnerability CVE-2023-4154: Information
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.
Severity: MEDIUM (6.5) Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| samba | sisyphus | 4.17.12-alt1 | 4.20.1-alt2 | ALT-PU-2023-6448-1 | 332020 | Fixed |
| samba | sisyphus_e2k | 4.17.12-alt1 | 4.20.1-alt1 | ALT-PU-2023-6495-1 | - | Fixed |
| samba | sisyphus_riscv64 | 4.17.12-alt1 | 4.20.1-alt2 | ALT-PU-2023-6523-1 | - | Fixed |
| samba | p10 | 4.17.12-alt3 | 4.19.6-alt2 | ALT-PU-2023-7794-2 | 332201 | Fixed |
| samba | p10_e2k | 4.17.12-alt3 | 4.19.6-alt2 | ALT-PU-2023-7914-1 | - | Fixed |
| samba | c9f2 | 4.16.11-alt0.c9.2 | 4.14.14-alt0.c9.1 | ALT-PU-2024-8331-1 | 336563 | In work |
| samba | p11 | 4.17.12-alt1 | 4.20.1-alt1 | ALT-PU-2023-6448-1 | 332020 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-4154 |
|
| RHBZ#2241883 |
|
| https://bugzilla.samba.org/show_bug.cgi?id=15424 |
|
| https://www.samba.org/samba/security/CVE-2023-4154.html |
|
| https://security.netapp.com/advisory/ntap-20231124-0002/ |