CVE-2026-73974

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{"affected": [{"affectedData": [{"product": "monitoring-plugins", "vendor": "Linuxfabrik", "versions": [{"status": "affected", "version": "< 7.0.0"}]}, {"product": "lib", "vendor": "Linuxfabrik", "versions": [{"status": "affected", "version": "< 6.0.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations, and Linuxfabrik Monitoring Plugins uses its shared testing helper across check plugins. Prior to linuxfabrik-lib 6.1.0 and Linuxfabrik Monitoring Plugins 7.0.0, lib.lftest.test() treated the first or second element of a --test CSV argument as a filesystem path and returned the file contents as simulated standard output or standard error without path confinement. The hidden but production-accessible --test argument was accepted by sudo-authorized plugins, so an attacker controlling the nagios or icinga account could use check-plugins/deb-updates/deb-updates with its default QUERY=1 to disclose every line of a root-readable file. Approximately 22 other plugins exposed filtered content or a root file existence and readability oracle through the same helper, while check-plugins/network-bonding/network-bonding and check-plugins/openstack-swift-stat/openstack-swift-stat had direct read paths that bypassed the helper. The library fix confines fixture reads to the invoking plugin's unit-test directory and refuses unsafe anchors, and the plugin fix routes the two bypasses through that helper. These issues are fixed in linuxfabrik-lib 6.1.0 and Linuxfabrik Monitoring Plugins 7.0.0."}, {"lang": "es", "value": "linuxfabrik-lib proporciona m\u00f3dulos Python para acceso a bases de datos, almacenamiento en cach\u00e9, ejecuci\u00f3n de shell e integraciones de API, y Linuxfabrik Monitoring Plugins utiliza su ayudante de pruebas compartido en todos los plugins de verificaci\u00f3n. Antes de linuxfabrik-lib 6.1.0 y Linuxfabrik Monitoring Plugins 7.0.0, lib.lftest.test() trataba el primer o segundo elemento de un argumento CSV --test como una ruta del sistema de archivos y devolv\u00eda el contenido del archivo como salida est\u00e1ndar simulada o error est\u00e1ndar sin confinamiento de ruta. El argumento --test oculto pero accesible en producci\u00f3n era aceptado por plugins autorizados por sudo, por lo que un atacante que controlara la cuenta nagios o icinga podr\u00eda usar check-plugins/deb-updates/deb-updates con su QUERY=1 predeterminado para divulgar cada l\u00ednea de un archivo legible por root. Aproximadamente otros 22 plugins expon\u00edan contenido filtrado o un or\u00e1culo de existencia y legibilidad de archivos root a trav\u00e9s del mismo ayudante, mientras que check-plugins/network-bonding/network-bonding y check-plugins/openstack-swift-stat/openstack-swift-stat ten\u00edan rutas de lectura directas que elud\u00edan al ayudante. La correcci\u00f3n de la biblioteca confina las lecturas de fixtures al directorio de pruebas unitarias del plugin invocador y rechaza anclajes inseguros, y la correcci\u00f3n del plugin enruta los dos desv\u00edos a trav\u00e9s de ese ayudante. Estos problemas est\u00e1n solucionados en linuxfabrik-lib 6.1.0 y Linuxfabrik Monitoring Plugins 7.0.0."}], "id": "CVE-2026-73974", "lastModified": "2026-11-09T20:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73974", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-19T16:55:07.626828Z", "version": "2.0.3"}}]}, "published": "2026-08-18T22:17:33.840", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/Linuxfabrik/lib/commit/d665042c55fae83a295ebc0023e8b77f6c473a28"}, {"source": "security-advisories@github.com", "url": "https://github.com/Linuxfabrik/lib/releases/tag/v6.1.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/Linuxfabrik/monitoring-plugins/commit/f6680a9e4b39569f318feefdb2f51e5d18c7dad5"}, {"source": "security-advisories@github.com", "url": "https://github.com/Linuxfabrik/monitoring-plugins/releases/tag/v7.0.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-rh9c-rqvg-f7pr"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-rh9c-rqvg-f7pr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-269"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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