Vulnerability Details : CVE-2022-21701
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 category: Gain privilege
Products affected by CVE-2022-21701
- 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:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-21701
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 43 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-21701
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST | |
|
5.0
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
1.6
|
3.4
|
GitHub, Inc. |
CWE ids for CVE-2022-21701
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2022-21701
-
https://github.com/istio/istio/security/advisories/GHSA-mq8f-9446-c28r
Privileged Escalation in Kubernetes Gateway API · Advisory · istio/istio · GitHubThird Party Advisory
-
https://istio.io/latest/news/releases/1.12.x/announcing-1.12.2/
Istio / Announcing Istio 1.12.2Mitigation;Release Notes;Vendor Advisory
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