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7.5 High

CVE-2023-4154 A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active…

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.

Affected products and versions

Product Affected versions Fixed in
samba 4.19 earliest → < 4.19.1 4.19.1
samba 4.18 earliest → < 4.18.8 4.18.8
samba 4.17 earliest → < 4.17.12 4.17.12
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Storage 3 Versions not published
Fedora Versions not published

References

Timeline

  1. Published
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