CVE-2021-3909 MEDIUM

CVE-2021-3909: Infinite open connection causes OctoRPKI to hang forever

Vendor Cloudflare
Product octorpki
Weakness CWE-400
Published November 11, 2021
Last update September 16, 2024
View on NVD All CVEs

CVSS base score

4.4/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 11, 2021 CVE published
September 16, 2024 Record updated