CVE-2019-15226
"Envoy HTTP Denial-of-Service Vulnerability"
Description
Upon receiving each incoming request header data, Envoy will iterate over existing request headers to verify that the total size of the headers stays below a maximum limit. The implementation in versions 1.10.0 through 1.11.1 for HTTP/1.x traffic and all versions of Envoy for HTTP/2 traffic had O(n^2) performance characteristics. A remote attacker may craft a request that stays below the maximum request header size but consists of many thousands of small headers to consume CPU and result in a denial-of-service attack.
INFO
Published Date :
Oct. 9, 2019, 4:15 p.m.
Last Modified :
Oct. 17, 2019, 5:03 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-2019-15226.
| URL | Resource |
|---|---|
| https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014 | Patch Third Party Advisory |
| https://github.com/envoyproxy/envoy/commits/master | Third Party Advisory |
| https://github.com/envoyproxy/envoy/issues/8520 | 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-15226 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-15226 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]
Oct. 17, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C) 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/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014 No Types Assigned https://github.com/envoyproxy/envoy/commit/afc39bea36fd436e54262f150c009e8d72db5014 Patch, Third Party Advisory Changed Reference Type https://github.com/envoyproxy/envoy/commits/master No Types Assigned https://github.com/envoyproxy/envoy/commits/master Third Party Advisory Changed Reference Type https://github.com/envoyproxy/envoy/issues/8520 No Types Assigned https://github.com/envoyproxy/envoy/issues/8520 Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:envoyproxy:envoy:1.0.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.1.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.2.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.3.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.4.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.5.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.6.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.7.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.7.1:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.8.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.9.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.9.1:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.10.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.11.0:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.11.1:*:*:*:*:*:*:* *cpe:2.3:a:envoyproxy:envoy:1.11.2:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-15226 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-2019-15226
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.46 }} -0.44%
score
0.75815
percentile