CVE-2019-18836
First published: Mon Nov 11 2019(Updated: )
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."
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Envoyproxy Envoy | =1.12.0 | |
| Istio Istio | >=1.3.0<=1.3.3 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-18836?
CVE-2019-18836 is a vulnerability in Envoy 1.12.0 that allows a remote denial of service due to resource loops.
What is the severity of CVE-2019-18836?
CVE-2019-18836 has a severity rating of 7.5 (high).
Which software are affected by CVE-2019-18836?
Envoy 1.12.0 and Istio versions 1.3.0 to 1.3.3 running on Microsoft Windows Server 2022 are affected by CVE-2019-18836.
How can CVE-2019-18836 be exploited?
CVE-2019-18836 can be exploited by using a single idle TCP connection to keep a worker thread in an infinite busy loop.
How can I fix CVE-2019-18836?
Update Envoy to a version later than 1.12.0 and update Istio to a version later than 1.3.3 to mitigate CVE-2019-18836.
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