CVE-2026-31979

{"id": "CVE-2026-31979", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.0}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-03-11T20:16:17.607", "references": [{"url": "https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-44wm-q286-ghq3", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Himmelblau es una suite de interoperabilidad para Microsoft Azure Entra ID e Intune. Antes de las versiones 3.1.0 y 2.3.8, el demonio himmelblaud-tasks, ejecut\u00e1ndose como root, escribe archivos de cach\u00e9 de Kerberos bajo /tmp/krb5cc_ sin protecciones de enlaces simb\u00f3licos. Desde el commit 87a51ee, PrivateTmp se elimina expl\u00edcitamente del endurecimiento de systemd del demonio de tareas, exponi\u00e9ndolo al /tmp del host. Un usuario local puede explotar esto mediante ataques de enlaces simb\u00f3licos para cambiar el propietario (chown) o sobrescribir archivos arbitrarios, logrando una escalada de privilegios local. Esta vulnerabilidad est\u00e1 corregida en las versiones 3.1.0 y 2.3.8."}], "lastModified": "2026-03-16T18:18:34.750", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:himmelblau-idm:himmelblau:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C66E65F5-D68D-43EC-B26B-7680565AA1DD", "versionEndExcluding": "2.3.8", "versionStartIncluding": "1.0.0"}, {"criteria": "cpe:2.3:a:himmelblau-idm:himmelblau:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1484B22D-EA09-40C2-B943-0EEAB8D2FA99", "versionEndExcluding": "3.1.0", "versionStartIncluding": "3.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}