CVE-2021-39204
Pomerium Envoy HTTP/2 stream Reset DoS Vulnerability
Description
Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, incorrectly handles resetting of HTTP/2 streams with excessive complexity. This can lead to high CPU utilization when a large number of streams are reset. This can result in a DoS condition. Pomerium versions 0.14.8 and 0.15.1 contain an upgraded envoy binary with this vulnerability patched.
INFO
Published Date :
Sept. 9, 2021, 10:15 p.m.
Last Modified :
Sept. 27, 2021, 6:30 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
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-2021-39204.
| URL | Resource |
|---|---|
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc | Third Party Advisory |
| https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r | Third Party Advisory |
| https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ | Not Applicable |
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).
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The following list is the news that have been mention
CVE-2021-39204 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-39204 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 -
Initial Analysis by [email protected]
Sep. 27, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Changed Reference Type https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc No Types Assigned https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc Third Party Advisory Changed Reference Type https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r No Types Assigned https://github.com/pomerium/pomerium/security/advisories/GHSA-5wjf-62hw-q78r Third Party Advisory Changed Reference Type https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ No Types Assigned https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ Not Applicable Added CWE NIST CWE-834 Added CPE Configuration OR *cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* versions up to (including) 1.16.4 *cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* versions from (including) 1.17.0 up to (excluding) 1.17.4 *cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* versions from (including) 1.18.0 up to (excluding) 1.18.4 *cpe:2.3:a:envoyproxy:envoy:1.19.0:*:*:*:*:*:*:* *cpe:2.3:a:pomerium:pomerium:*:*:*:*:*:*:*:* versions up to (excluding) 0.14.8 *cpe:2.3:a:pomerium:pomerium:0.15.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-39204 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-2021-39204
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.02%
score
0.49909
percentile