CVE-2019-18836

Public Exploit

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."

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory envoyproxy.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://groups.google.com/forum/#%21forum/envoy-users
https://blog.envoyproxy.io vendor advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46 third party advisory exploit
https://github.com/istio/istio/issues/18229 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-18836?
CVE-2019-18836 has been scored as a high severity vulnerability.
How to fix CVE-2019-18836?
To fix CVE-2019-18836, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-18836 being actively exploited in the wild?
It is possible that CVE-2019-18836 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.