CVE-2021-31921: Missing Authorization

June 2, 2021 (updated May 1, 2022)

Istio, when a gateway is using the AUTO_PASSTHROUGH routing configuration, allows attackers to bypass authorization checks and access unexpected services in the cluster.

References

istio.io/latest/news/security/istio-security-2021-006/
nvd.nist.gov/vuln/detail/CVE-2021-31921

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