Access Restriction Bypass Affecting istio.io/istio/pilot/pkg/model package, versions >=1.9.0 <1.9.5 <1.8.6
Threat Intelligence
EPSS
0.33% (72nd
percentile)
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Test your applications- Snyk ID SNYK-GOLANG-ISTIOIOISTIOPILOTPKGMODEL-1299105
- published 3 Jun 2021
- disclosed 3 Jun 2021
- credit John Howard of Google
Introduced: 3 Jun 2021
CVE-2021-31921 Open this link in a new tabHow to fix?
Upgrade istio.io/istio/pilot/pkg/model 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.
References
CVSS Scores
version 3.1