CVE-2020-16844

Medium

Description

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.

SeverityMedium
CVSS6.8
Exploit probability—
ProductIstio
PublishedOct 1, 2020
First seenOct 1, 2020

How to fix

Update
  • istio.io/istio1.5.9, 1.6.8 or later

Affected products

ProductAffected versionsFixed in
istio istio1.5.0 ≤ v ≤ 1.5.8, 1.6.0 ≤ v ≤ 1.6.7—
istio.io/istioGo1.5.0 ≤ v < 1.5.9, 1.6.0 ≤ v < 1.6.81.5.9, 1.6.8

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