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Samba CVE-2023-4154: CVE-2023-3961, CVE-2023-4091, CVE-2023-4154, CVE-2023-42669, and CVE-2023-42670. Please see announcements for details.

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Samba CVE-2023-4154: CVE-2023-3961, CVE-2023-4091, CVE-2023-4154, CVE-2023-42669, and CVE-2023-42670. Please see announcements for details.

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/13/2023
Created
10/13/2023
Added
10/13/2023
Modified
11/17/2023

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.

Solution(s)

  • samba-upgrade-4_17_12
  • samba-upgrade-4_18_8
  • samba-upgrade-4_19_1

References

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