CVE-2023-4154

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.

Bugs

• <https://bugzilla.samba.org/show_bug.cgi?id=15424&gt;