VULNERABILITY INTELLIGENCE

CVE-2021-3909

CVSS score4.4 MEDIUM
EPSS probability1.57%
CISA KEVNot currently listed
Published2021-11-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • cna@cloudflare.com: CWE-400
  • nvd@nist.gov: CWE-400

Primary references