Out-of-bounds Write Affecting samba-ad-dc-libs package, versions <4.15.13+git.691.3d3cea0641-150300.3.63.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.09% (39th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-SLES153-SAMBAADDCLIBS-6003759
  • published18 Oct 2023
  • disclosed17 Oct 2023

Introduced: 17 Oct 2023

CVE-2023-4154  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 samba-ad-dc-libs to version 4.15.13+git.691.3d3cea0641-150300.3.63.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba-ad-dc-libs package and not the samba-ad-dc-libs package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

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.

CVSS Scores

version 3.1