CVE-2022-24726
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- CVE-2022-24726
CVE Details
| Release Date: | 2022-03-10 |
Description
Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, istiod, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing when the validating webhook for a cluster is exposed publicly. This endpoint is served over TLS port 15017, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [external istiod](https://istio.io/latest/docs/setup/install/external-controlplane/) topologies, this port is exposed over the public internet. This issue has been patched in versions 1.13.2, 1.12.5 and 1.11.8. Users are advised to upgrade. Users unable to upgrade should disable access to a validating webhook that is exposed to the public internet or restrict the set of IP addresses that can query it to a set of known, trusted entities.
See more information about CVE-2022-24726 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 7.5 | Base Metrics: | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Access Vector: | Network | Attack Complexity: | Low |
| Privileges Required: | None | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | None |
| Integrity Impact: | None | Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (istio) | ELSA-2022-9362 | 2022-05-09 |
| Oracle Linux version 7 (istio) | ELSA-2022-9363 | 2022-05-09 |
| Oracle Linux version 7 (olcne) | ELSA-2022-9362 | 2022-05-09 |
| Oracle Linux version 7 (olcne) | ELSA-2022-9363 | 2022-05-09 |
| Oracle Linux version 8 (istio) | ELSA-2022-9362 | 2022-05-09 |
| Oracle Linux version 8 (istio) | ELSA-2022-9363 | 2022-05-09 |
| Oracle Linux version 8 (olcne) | ELSA-2022-9362 | 2022-05-09 |
| Oracle Linux version 8 (olcne) | ELSA-2022-9363 | 2022-05-09 |
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