CVE-2026-73973

{"id": "CVE-2026-73973", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73973", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-19T19:19:51.315696Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "Linuxfabrik", "product": "monitoring-plugins", "versions": [{"status": "affected", "version": "< 7.0.0"}]}]}], "published": "2026-08-18T22:17:33.667", "references": [{"url": "https://github.com/Linuxfabrik/monitoring-plugins/blob/ae486fc629e1ca9373e1b6dd5e395603ee453bbc/CHANGELOG.md#v700---2026-08-14", "source": "security-advisories@github.com"}, {"url": "https://github.com/Linuxfabrik/monitoring-plugins/commit/a0ca1268d84e0caf10442b9c7477d699b52d1c92", "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-f54c-p5vg-mr5c", "source": "security-advisories@github.com"}, {"url": "https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-f54c-p5vg-mr5c", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-269"}]}], "descriptions": [{"lang": "en", "value": "Linuxfabrik Monitoring Plugins provides monitoring plugins for Icinga, Nagios, and related systems. Prior to version 7.0.0, check-plugins/logfile/logfile accepted a free-form --filename path and opened it as root when invoked through the shipped nagios or icinga sudoers allowlist, without confining the resolved path to /var/log. An attacker who controls the monitoring account can select a root-readable file such as /etc/shadow and use --warning-regex . while leaving SUPPRESS_OUTPUT false, causing each nonempty line to be collected in warn_matches and returned through lib.base.oao(). The vulnerable flow passes the expanded scan_path directly to open(), and neither real-path containment nor an allowlist protects the sink. The same fix also confines mysql-logfile and openvpn-client-list paths, allows only documented log roots, and resolves symlinks and parent-directory traversal before checking containment. This issue is fixed in version 7.0.0."}, {"lang": "es", "value": "Linuxfabrik Monitoring Plugins proporciona plugins de monitorizaci\u00f3n para Icinga, Nagios y sistemas relacionados. Antes de la versi\u00f3n 7.0.0, check-plugins/logfile/logfile aceptaba una ruta --filename de formato libre y la abr\u00eda como root cuando se invocaba a trav\u00e9s de la lista de permitidos (allowlist) de sudoers de nagios o icinga incluida, sin confinar la ruta resuelta a /var/log. Un atacante que controla la cuenta de monitorizaci\u00f3n puede seleccionar un archivo legible por root como /etc/sha4dow y usar --warning-regex . mientras deja SUPPRESS_OUTPUT en false, haciendo que cada l\u00ednea no vac\u00eda se recoja en warn_matches y se devuelva a trav\u00e9s de lib.base.oao(). El flujo vulnerable pasa la scan_path expandida directamente a open(), y ni la contenci\u00f3n de ruta real ni una lista de permitidos (allowlist) protegen el sumidero. La misma correcci\u00f3n tambi\u00e9n confina las rutas de MySQL-logfile y openvpn-client-list, permite solo ra\u00edces de registro documentadas y resuelve enlaces simb\u00f3licos y salto de directorio padre antes de verificar la contenci\u00f3n. Este problema est\u00e1 corregido en la versi\u00f3n 7.0.0."}], "lastModified": "2026-10-22T16:09:59.560", "sourceIdentifier": "security-advisories@github.com"}