CVE-2025-34323

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Cory Billington of theyhack.me"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\">Nagios</span><span style=\"background-color: rgb(255, 255, 255);\">&nbsp;Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the '</span><span style=\"background-color: rgb(255, 255, 255);\">nagios</span><span style=\"background-color: rgb(255, 255, 255);\">' group, which has write access to '/usr/local/nagioslogserver/</span><span style=\"background-color: rgb(255, 255, 255);\">scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. This allows arbitrary commands to be executed with root privileges, providing full compromise of the underlying operating system.</span><br>"}], "value": "Nagios\u00a0Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the 'nagios' group, which has write access to '/usr/local/nagioslogserver/scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. 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The 'www-data' user is a member of the '</span><span style=\"background-color: rgb(255, 255, 255);\">nagios</span><span style=\"background-color: rgb(255, 255, 255);\">' group, which has write access to '/usr/local/nagioslogserver/</span><span style=\"background-color: rgb(255, 255, 255);\">scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Log Server", "vendor": "Nagios", "versions": [{"lessThan": "2026R1.0.1", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "disclosure@vulncheck.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "193F80CC-75B5-4F6B-8C44-ABB8ADC43C31", "versionEndExcluding": "2026", "vulnerable": true}, {"criteria": "cpe:2.3:a:nagios:log_server:2026:r1:*:*:*:*:*:*", "matchCriteriaId": "B2FC4948-E93B-4F6F-83D5-17A39A5DDAAA", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nagios\u00a0Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the 'nagios' group, which has write access to '/usr/local/nagioslogserver/scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. This allows arbitrary commands to be executed with root privileges, providing full compromise of the underlying operating system."}, {"lang": "es", "value": "Las versiones de Nagios Log Server anteriores a 2026R1.0.1 son vulnerables a la escalada de privilegios local debido a una combinaci\u00f3n de mala configuraci\u00f3n de sudo y directorios de aplicaci\u00f3n con permisos de escritura para el grupo. El usuario 'www-data' es miembro del grupo 'nagios', el cual tiene acceso de escritura a '/usr/local/nagioslogserver/scripts', mientras que varios scripts en este directorio son propiedad de root y pueden ejecutarse a trav\u00e9s de sudo sin contrase\u00f1a. Un atacante local ejecut\u00e1ndose como 'www-data' puede mover uno de estos scripts propiedad de root a un nombre de respaldo y crear un script de reemplazo con contenido controlado por el atacante en la ruta original, y luego invocarlo con sudo. Esto permite que se ejecuten comandos arbitrarios con privilegios de root, lo que proporciona un compromiso total del sistema operativo subyacente."}], "id": "CVE-2025-34323", "lastModified": "2026-10-07T21:10:00.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-34323", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-11-18T04:55:23.887125Z", "version": "2.0.3"}}]}, "published": "2025-11-17T18:15:56.880", "references": [{"source": "disclosure@vulncheck.com", "url": "https://theyhack.me/Rooting-Nagios-Log-Server/"}, {"source": "disclosure@vulncheck.com", "tags": ["Release Notes"], "url": "https://www.nagios.com/changelog/nagios-log-server/nagios-log-server-2026r1-0-1/"}, {"source": "disclosure@vulncheck.com", "tags": ["Vendor Advisory"], "url": "https://www.nagios.com/products/security/#log-server"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/nagios-log-server-local-privilege-escalation-via-writable-scripts-and-sudo-rules"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-732"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

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