8.8
CVSSv3

CVE-2022-21701

Published: 19/01/2022 Updated: 27/01/2022
CVSS v2 Base Score: 6 | Impact Score: 6.4 | Exploitability Score: 6.8
CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8
VMScore: 534
Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P

Vulnerability Summary

Istio is an open platform to connect, manage, and secure microservices. In versions 1.12.0 and 1.12.1 Istio is vulnerable to a privilege escalation attack. Users who have `CREATE` permission for `gateways.gateway.networking.k8s.io` objects can escalate this privilege to create other resources that they may not have access to, such as `Pod`. This vulnerability impacts only an Alpha level feature, the Kubernetes Gateway API. This is not the same as the Istio Gateway type (gateways.networking.istio.io), which is not vulnerable. Users are advised to upgrade to resolve this issue. Users unable to upgrade should implement any of the following which will prevent this vulnerability: Remove the gateways.gateway.networking.k8s.io CustomResourceDefinition, set PILOT_ENABLE_GATEWAY_API_DEPLOYMENT_CONTROLLER=true environment variable in Istiod, or remove CREATE permissions for gateways.gateway.networking.k8s.io objects from untrusted users.

Vulnerability Trend

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istio istio 1.12.0

istio istio 1.12.1

Vendor Advisories

Istio is an open platform to connect, manage, and secure microservices In versions 1120 and 1121 Istio is vulnerable to a privilege escalation attack Users who have `CREATE` permission for `gatewaysgatewaynetworkingk8sio` objects can escalate this privilege to create other resources that they may not have access to, such as `Pod` This vu ...