VulnerabilityModified
CVE-2021-3909
OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever.
HIGH 7.5EPSS 1.56%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.56% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- cloudflare/octorpki · debian/debian linux
- Source
- cna@cloudflare.com
References
- https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244Third Party Advisory
- https://www.debian.org/security/2021/dsa-5033Third Party Advisory
- https://www.debian.org/security/2022/dsa-5041Third Party Advisory
- https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244Third Party Advisory
- https://www.debian.org/security/2021/dsa-5033Third Party Advisory
- https://www.debian.org/security/2022/dsa-5041Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.