7

CVE-2026-34397

Exploit

himmelblau: NSS fake-primary group lookup reintroduces name collision risk

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Himmelblau-idm ≫ Himmelblau Version >= 2.0.0 < 2.3.9
Himmelblau-idm ≫ Himmelblau Version >= 3.0.0 < 3.1.1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.052
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 6.3 1 5.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE-269 Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-v7xx-7mqc-g835
Vendor Advisory
Exploit
Mitigation
https://github.com/himmelblau-idm/himmelblau/releases/tag/2.3.9
Product
Release Notes
https://github.com/himmelblau-idm/himmelblau/releases/tag/3.1.1
Product
Release Notes