CVE-2026-31979

HIGH

8.8

Description

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Prior to 3.1.0 and 2.3.8, the himmelblaud-tasks daemon, running as root, writes Kerberos cache files under /tmp/krb5cc_<uid> without symlink protections. Since commit 87a51ee, PrivateTmp is explicitly removed from the tasks daemon's systemd hardening, exposing it to the host /tmp. A local user can exploit this via symlink attacks to chown or overwrite arbitrary files, achieving local privilege escalation. This vulnerability is fixed in 3.1.0 and 2.3.8.

Details CVE

Score CVSS v3.18.8

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Vecteur d'attaqueLOCAL

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie3/11/2026

Derniere modification3/16/2026

Sourcenvd

Observations honeypot0

Produits affectes

himmelblau-idm:himmelblau

Faiblesses (CWE)

CWE-59

References

https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-44wm-q286-ghq3(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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