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Improper Access Control Affecting istio.io/istio/pilot/pkg/security/authz/model/matcher package, versions >=1.5.0 <1.5.9 >=1.6.0 <1.6.8

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.08% (34th percentile)
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NVD
6.8 medium
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Red Hat
6.8 medium

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  • Snyk ID SNYK-GOLANG-ISTIOIOISTIOPILOTPKGSECURITYAUTHZMODELMATCHER-1040464
  • published 2 Oct 2020
  • disclosed 2 Oct 2020
  • credit Unknown
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Introduced: 2 Oct 2020

CVE-2020-16844 Open this link in a new tab
CWE-284 Open this link in a new tab

How to fix?

Upgrade istio.io/istio/pilot/pkg/security/authz/model/matcher to version 1.5.9, 1.6.8 or higher.

Overview

istio.io/istio/pilot/pkg/security/authz/model/matcher is an open platform to connect, manage, and secure microservices.

Affected versions of this package are vulnerable to Improper Access Control. 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.