CVE-2021-3909
Infinite open connection causes OctoRPKI to hang forever in github.com/cloudflare/cfrpki
4.4
MEDIUM
CVSS 3.1
EPSS 1.5%
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.
How to fix CVE-2021-3909
To remediate CVE-2021-3909, upgrade the affected package to a fixed version below.
- —upgrade to 1.4.0 or later
Is CVE-2021-3909 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.4.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |