VYPR
Medium severity6.8NVD Advisory· Published Jan 19, 2022· Updated Jun 17, 2026

CVE-2022-21679

CVE-2022-21679

Description

Istio is an open platform to connect, manage, and secure microservices. In Istio 1.12.0 and 1.12.1 The authorization policy with hosts and notHosts might be accidentally bypassed for ALLOW action or rejected unexpectedly for DENY action during the upgrade from 1.11 to 1.12.0/1.12.1. Istio 1.12 supports the hosts and notHosts fields in authorization policy with a new Envoy API shipped with the 1.12 data plane. A bug in the 1.12.0 and 1.12.1 incorrectly uses the new Envoy API with the 1.11 data plane. This will cause the hosts and notHosts fields to be always matched regardless of the actual value of the host header when mixing 1.12.0/1.12.1 control plane and 1.11 data plane. Users are advised to upgrade or to not mix the 1.12.0/1.12.1 control plane with 1.11 data plane if using hosts or notHosts field in authorization policy.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

11
  • Istio/Istio11 versions
    cpe:2.3:a:istio:istio:1.12.0:-:*:*:*:*:*:*+ 10 more
    • cpe:2.3:a:istio:istio:1.12.0:-:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:alpha0:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:alpha1:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:alpha5:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:beta0:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:beta1:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:beta2:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.0:rc1:*:*:*:*:*:*
    • cpe:2.3:a:istio:istio:1.12.1:*:*:*:*:*:*:*
    • (no CPE)range: 1.12.0, 1.12.1
    • (no CPE)range: >= 1.12.0, < 1.12.2

Patches

Vulnerability mechanics

References

2

News mentions

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