CVE-2023-4154 in Sambainfo

Summary

by MITRE • 11/07/2023

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.

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Reservation

08/04/2023

Disclosure

11/07/2023

Moderation

accepted

CPE

ready

EPSS

0.01151

KEV

no

Activities

very low

Sources

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