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CVE-2026-31979

nvd nist
Published: Mar 11, 2026Modified: Jun 17, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

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.

Affected (2)

Himmelblau Idm
1 product
Himmelblau
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Himmelblau Idm
Himmelblau
From 1.0.0 to 2.3.8
Himmelblau
From 3.0.0 to 3.1.0

Related CWEs

CWE-59
Improper Link Resolution Before File Access ('Link Following')
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (1)

Source: security-advisories@github.com
ExploitMitigationVendor Advisory

Timeline

No history available yet.