What is CVE-2019-18836?

CVE-2019-18836 is a high-severity vulnerability in Envoyproxy Envoy, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2019-11-11.

How severe is CVE-2019-18836?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Envoyproxy Envoy

CVE-2019-18836

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."

EPSS: 0.019 (78.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Envoyproxy Envoy — versions 1.12.0
Istio
N/a — versions n/a

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

cve@mitre.org (x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_CONFIRM, Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-18836?: CVE-2019-18836 is a high-severity vulnerability in Envoyproxy Envoy, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2019-11-11.
How severe is CVE-2019-18836?: High severity. CVSS v3 base score is 7.5 out of 10.