Improper Privilege Management Affecting libnss_himmelblau2 package, versions <2.3.9+git0.a9fd29b-160000.1.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.16% (6th 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-SLES1600-LIBNSSHIMMELBLAU2-16419551
  • published5 May 2026
  • disclosed30 Apr 2026

Introduced: 30 Apr 2026

CVE-2026-34397  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libnss_himmelblau2 to version 2.3.9+git0.a9fd29b-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libnss_himmelblau2 package and not the libnss_himmelblau2 package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From versions 2.0.0-alpha to before 2.3.9 and 3.0.0-alpha to before 3.1.1, there is a conditional local privilege escalation vulnerability in an edge-case naming collision. Only authenticated himmelblau users whose mapped CN/short name exactly matches a privileged local group name (e.g., "sudo", "wheel", "docker", "adm") can cause the NSS module to resolve that group name to their fake primary group. If the system uses NSS results for group-based authorization decisions (sudo, polkit, etc.), this can grant the attacker the privileges of that group. This issue has been patched in versions 2.3.9 and 3.1.1.

CVSS Base Scores

version 3.1