CVE-2021-3909
OctoRPKI HTTP Connection Timeout Denial of Service
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.
INFO
Published Date :
Nov. 11, 2021, 10:15 p.m.
Last Modified :
April 4, 2022, 2:02 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-3909 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3909.
| URL | Resource |
|---|---|
| https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244 | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-5033 | Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5041 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Research CVEs
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3909 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3909 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 04, 2022
Action Type Old Value New Value Changed Reference Type https://www.debian.org/security/2021/dsa-5033 No Types Assigned https://www.debian.org/security/2021/dsa-5033 Third Party Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5041 No Types Assigned https://www.debian.org/security/2022/dsa-5041 Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 12, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5041 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 31, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-5033 [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 16, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244 No Types Assigned https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244 Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:cloudflare:octorpki:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3909 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3909
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.23 }} 0.07%
score
0.61046
percentile