{"id":"CVE-2021-3910","aliases":["DEBIAN-CVE-2021-3910","DSA-5041-1","EUVD-2021-2304","GHSA-5mxh-2qfv-4g7j","GO-2022-0251","UBUNTU-CVE-2021-3910"],"status":"published","title":"NUL character in ROA causes OctoRPKI to crash","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01212,"percentile":0.68747,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2021-11-10T20:15:06Z","modified":"2026-10-23T18:03:31Z","fixes":[{"ecosystem":"Go","package":"github.com/cloudflare/cfrpki","fixed_in":["1.4.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"cfrpki","fixed_in":["1.4.0-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/cloudflare/cfrpki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"cfrpki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-1"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"cfrpki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.2-1~deb11u1"}]}],"versions":["1.2.2-1","1.3.0-1","1.4.0-1"],"bundled":10},{"source":"osv","ecosystem":"Go","package":"github.com/cloudflare/cfrpki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.0"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/cloudflare/cfrpki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.0"}]}]}],"products":[{"vendor":"cloudflare","product":"octorpki"},{"vendor":"debian","product":"debian_linux"}],"references":[{"url":"https://github.com/cloudflare/cfrpki/security/advisories/GHSA-5mxh-2qfv-4g7j","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://www.debian.org/security/2022/dsa-5041","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3910","tags":["advisory"]},{"url":"https://github.com/cloudflare/cfrpki/releases/tag/v1.4.0","tags":["web"]},{"url":"https://github.com/cloudflare/cfrpki/commit/76f0f7a98da001fa04e5bc0407c6702f91096bfa","tags":["web","fix","report"]},{"url":"https://pkg.go.dev/vuln/GO-2022-0251","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5mxh-2qfv-4g7j"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-3910","tags":["advisory"]},{"url":"https://github.com/cloudflare/cfrpki","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-3910","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-3910","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-3910","title":"NUL character in ROA causes OctoRPKI to crash","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","status":"published","published":"2021-11-11T21:45:21.177Z","modified":"2024-09-17T03:27:37.742Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-2304","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","status":"published","published":"2021-11-11T21:45:21Z","modified":"2024-09-17T03:27:37Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T00:28:31.565881Z"}],"ghsa":[{"id":"GHSA-5mxh-2qfv-4g7j","title":"NUL character in ROA causes OctoRPKI to crash","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded `NUL` (`\\0`) character).\n\n## Patches\n\n## For more information\nIf you have any questions or comments about this advisory email us at security@cloudflare.com","status":"published","published":"2021-11-10T20:15:06Z","modified":"2023-02-14T17:45:40Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:36:45.67005Z"}],"nvd":[{"id":"CVE-2021-3910","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","status":"published","published":"2021-11-11T22:15:07.973Z","modified":"2026-06-17T04:05:58.493Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:00.984108Z"}],"osv":[{"id":"CVE-2021-3910","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","status":"published","published":"2021-11-11T22:15:07.973Z","modified":"2026-10-20T10:54:52.738130836Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.843843Z"},{"id":"DEBIAN-CVE-2021-3910","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","status":"published","published":"2021-11-11T22:15:07.973Z","modified":"2026-10-23T18:03:31.85104603Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:35.521549Z"},{"id":"GHSA-5mxh-2qfv-4g7j","title":"NUL character in ROA causes OctoRPKI to crash","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded `NUL` (`\\0`) character).\n\n## Patches\n\n## For more information\nIf you have any questions or comments about this advisory email us at security@cloudflare.com","status":"published","published":"2021-11-10T20:15:06Z","modified":"2026-07-08T06:28:34.724197298Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:46:38.553953Z"},{"id":"UBUNTU-CVE-2021-3910","description":"OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\\0) character).","status":"withdrawn","published":"2021-11-11T22:15:00Z","modified":"2025-07-16T07:43:06.385096Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:28.526929Z"},{"id":"DSA-5041-1","title":"cfrpki - security update","status":"published","published":"2022-01-11T00:00:00Z","modified":"2026-03-09T02:10:29.476256Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"GO-2022-0251","title":"Panic on NUL character in ROA in github.com/cloudflare/cfrpki","description":"OctoRPKI crashes when a repository returns an invalid ROA that is only an encoded NUL character (\\0).","status":"published","published":"2022-07-15T23:07:28Z","modified":"2024-05-20T16:03:47Z","updated_at":"2026-11-02T15:47:00.604718Z"}]}}