What is CVE-2020-16844?

CVE-2020-16844 is a medium-severity vulnerability in Istio. CVSS score: 6.8/10. Published 2020-10-01.

How severe is CVE-2020-16844?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Istio

CVE-2020-16844

In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.

EPSS: 0.011 (62.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Istio
N/a — versions n/a

References

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

Frequently asked questions

What is CVE-2020-16844?: CVE-2020-16844 is a medium-severity vulnerability in Istio. CVSS score: 6.8/10. Published 2020-10-01.
How severe is CVE-2020-16844?: Medium severity. CVSS v3 base score is 6.8 out of 10.