{"id":"CVE-2021-3978","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3978","generatedAt":"2026-10-27T21:09:19.075Z","title":"Since the provided service definition defaults to root ( https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service ) this could allow for a vector, when combined with another vulnerability that causes octorpki to process a malicious TAL…","description":"When copying files with rsync, octorpki uses the \"-a\" flag 0, which forces rsync to copy binaries with the suid bit set as root. Since the provided service definition defaults to root ( https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service ) this could allow for a vector, when combined with another vulnerability that causes octorpki to process a malicious TAL file, for a local privilege escalation.","published":"2025-01-29T10:15:08.000Z","lastModified":"2026-06-17T04:06:20.000Z","status":"Analyzed","sourceIdentifier":"cna@cloudflare.com","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-269"],"affected":["cloudflare/octorpki"],"epss":{"score":0.00144,"percentile":0.03694,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85","tags":["Vendor Advisory"],"source":"cna@cloudflare.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3978","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}