{"id":"UBUNTU-CVE-2021-3909","details":"OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. Specifically, the repository that OctoRPKI sends HTTP requests to will keep the connection open for a day before a response is returned, but does keep drip feeding new bytes to keep the connection alive.","modified":"2025-07-16T07:19:56.449562Z","published":"2021-11-11T22:15:00Z","withdrawn":"2025-07-18T16:46:31Z","upstream":["CVE-2021-3909"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-3909"},{"type":"REPORT","url":"https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244"},{"type":"REPORT","url":"https://github.com/cloudflare/cfrpki/commit/71ac74e691dc791731f90b72710975414ecec1eb"},{"type":"REPORT","url":"https://github.com/cloudflare/cfrpki/commit/dbc038f83197edc1f3360ab35af193a1557063c6"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-3909"}],"affected":[{"package":{"name":"cfrpki","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/cfrpki@1.4.2-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.2-1"}]}],"versions":["1.2.2-1","1.3.0-1","1.4.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"octorpki","binary_version":"1.4.2-1"},{"binary_name":"octorpki-dbgsym","binary_version":"1.4.2-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3909.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}