CVE-2020-16844 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Reference

https://github.com/istio/istio/releases https://istio.io/latest/news/security/istio-security-2020-009/

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.8