CVE-2019-18836
"Envoy Resource Denial of Service Vulnerability"
Description
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
INFO
Published Date :
Nov. 11, 2019, 1:15 a.m.
Last Modified :
Nov. 7, 2023, 3:07 a.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-2019-18836.
| URL | Resource |
|---|---|
| https://blog.envoyproxy.io | Vendor Advisory |
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46 | Exploit Third Party Advisory |
| https://github.com/istio/istio/issues/18229 | Exploit Third Party Advisory |
| https://groups.google.com/forum/#%21forum/envoy-users |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-18836 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-18836 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 -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://groups.google.com/forum/#%21forum/envoy-users [No types assigned] Removed Reference MITRE https://groups.google.com/forum/#!forum/envoy-users -
Initial Analysis by [email protected]
Nov. 12, 2019
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://blog.envoyproxy.io No Types Assigned https://blog.envoyproxy.io Vendor Advisory Changed Reference Type https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46 No Types Assigned https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46 Exploit, Third Party Advisory Changed Reference Type https://github.com/istio/istio/issues/18229 No Types Assigned https://github.com/istio/istio/issues/18229 Exploit, Third Party Advisory Changed Reference Type https://groups.google.com/forum/#!forum/envoy-users No Types Assigned https://groups.google.com/forum/#!forum/envoy-users Mailing List, Third Party Advisory Added CWE NIST CWE-835 Added CPE Configuration OR *cpe:2.3:a:envoyproxy:envoy:1.12.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* versions from (including) 1.3.0 up to (including) 1.3.3 -
CVE Modified by [email protected]
Nov. 12, 2019
Action Type Old Value New Value Changed Description Envoy before 1.12.1 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used. Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-18836 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-2019-18836
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.18 }} 0.33%
score
0.85496
percentile