What is CVE-2020-8664?

CVE-2020-8664 is a medium-severity vulnerability in Cncf Envoy, classified under Improper Authentication. CVSS score: 5.3/10. Published 2020-03-04.

How severe is CVE-2020-8664?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2020-8664 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Cncf Envoy

CVE-2020-8664

CNCF Envoy through 1.13.0 has incorrect Access Control when using SDS with Combined Validation Context. Using the same secret (e.g. trusted CA) across many resources together with the combined validation context could lead to the “static”…

Vulnerability class: Broken Authentication

EPSS: 0.013 (67.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cncf Envoy
N/a — versions n/a

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Release Notes)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8664?: CVE-2020-8664 is a medium-severity vulnerability in Cncf Envoy, classified under Improper Authentication. CVSS score: 5.3/10. Published 2020-03-04.
How severe is CVE-2020-8664?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2020-8664 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.