{"id":"CVE-2025-34287","state":"PUBLISHED","title":"Nagios XI < 2024R2 Privilege Escalation via process_perfdata.pl","description":"Nagios XI versions prior to 2024R2 contain an improperly owned script, process_perfdata.pl, which is executed periodically as the nagios user but owned by www-data. Because the file was writable by www-data, an attacker with web server privileges could modify its contents, leading to arbitrary code execution as the nagios user when the script is next run. This improper ownership and permission configuration enables local privilege escalation.","publishedAt":"2025-10-30T21:39:43.482Z","updatedAt":"2025-11-17T18:21:51.502Z","severity":{"score":8.4,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Nagios XI"],"affected":[{"vendor":"Nagios","product":"XI","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2024R2","versionType":"custom"}],"modules":["process_perfdata.pl"]}],"references":["https://www.nagios.com/changelog/nagios-xi/","https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-improperly-owned-script"],"weaknesses":["CWE-732"],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/34xxx/CVE-2025-34287.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-34287","state":"PUBLISHED","datePublished":"2025-10-30T21:39:43.482Z","dateUpdated":"2025-11-17T18:21:51.502Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2025-04-15T19:15:22.581Z"},"containers":{"cna":{"title":"Nagios XI < 2024R2 Privilege Escalation via process_perfdata.pl","descriptions":[{"lang":"en","value":"Nagios XI versions prior to 2024R2 contain an improperly owned script, process_perfdata.pl, which is executed periodically as the nagios user but owned by www-data. Because the file was writable by www-data, an attacker with web server privileges could modify its contents, leading to arbitrary code execution as the nagios user when the script is next run. This improper ownership and permission configuration enables local privilege escalation."}],"affected":[{"vendor":"Nagios","product":"XI","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2024R2","versionType":"custom"}],"modules":["process_perfdata.pl"]}],"references":[{"url":"https://www.nagios.com/changelog/nagios-xi/","tags":["release-notes","patch"]},{"url":"https://www.vulncheck.com/advisories/nagios-xi-privilege-escalation-via-improperly-owned-script","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":8.4,"baseSeverity":"HIGH","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:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-732","description":"CWE-732 Incorrect Permission Assignment for Critical Resource","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2025-11-17T18:21:51.502Z"},"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nagios:nagios_xi:2024:*:*:*:*:*:*:*","versionEndExcluding":"r2"}]}]}],"credits":[{"lang":"en","type":"finder","value":"M. Cory Billington of theyhack.me"}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">Nagios addresses this vulnerability as \"</span><span style=\"background-color: rgb(255, 255, 255);\">Changed ownership on process_perfdata.pl to prevent permission escalation\"</span><br>"}],"value":"Nagios addresses this vulnerability as \"Changed ownership on process_perfdata.pl to prevent permission escalation\""}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-31T13:45:14.832334Z","id":"CVE-2025-34287","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-31T13:56:07.335Z"}}]}}}