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Access Restriction Bypass Affecting github.com/istio/istio/pilot/pkg/networking/core/v1alpha3 Open this link in a new tab package, versions >=1.9.0 <1.9.5 <1.8.6

0.0
high

  • Attack Complexity

    Low

  • Scope

    Changed

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  • snyk-id

    SNYK-GOLANG-GITHUBCOMISTIOISTIOPILOTPKGNETWORKINGCOREV1ALPHA3-1299104

  • published

    3 Jun 2021

  • disclosed

    3 Jun 2021

  • credit

    John Howard of Google

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Introduced: 3 Jun 2021

CVE-2021-31921 Open this link in a new tab
CWE-284 Open this link in a new tab

How to fix?

Upgrade github.com/istio/istio/pilot/pkg/networking/core/v1alpha3 to version 1.9.5, 1.8.6 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. When a gateway is using the AUTO_PASSTHROUGH routing configuration, attackers can bypass authorization checks and access unexpected services in the cluster.

This vulnerability only impacts usage of the AUTO_PASSTHROUGH Gateway type, which is typically only used in multi-network multi-cluster deployments. See the Istio advisory for more information on triaging the impact of this vulnerability.