CVE-2022-21953 Authenticated user can gain unauthorized shell pod and kubectl access in the local cluster

What is CVE-2022-21953?

CVE-2022-21953 is a high-severity missing authorization vulnerability in SUSE Rancher, published on 7 Feb 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A Missing Authorization vulnerability in of SUSE Rancher allows authenticated user to create an unauthorized shell pod and kubectl access in the local cluster This issue affects: SUSE Rancher Rancher versions prior to 2.5.17; Rancher versions prior to 2.6.10; Rancher versions prior to 2.7.1.

Weakness: CWE-862

Which versions are affected by CVE-2022-21953?

6 open source packages ship an affected version, including github.com/rancher/rancher. It affects 1 product.

Products include Suse Rancher.

How do I fix CVE-2022-21953?

Upgrade github.com/rancher/rancher to a fixed version for your release line: 2.5.17, 2.6.10 or 2.7.1.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2022-21953 being exploited?

There is no known exploitation of CVE-2022-21953 in the wild and no public exploit code.

Other vulnerabilities in SUSE Rancher

• CVE-2023-22647 Rancher vulnerable to Privilege Escalation via manipulation of Secrets Critical 9.9
• CVE-2023-22651 Rancher Webhook is misconfigured during upgrade process Critical 9.9
• CVE-2022-43757 Rancher: Exposure of sensitive fields Critical 9.9
• CVE-2021-36782 Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object Critical 9.9
• CVE-2021-36783 Rancher: Failure to properly sanitize credentials in cluster template answers Critical 9.9

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-g25r-gvq3-wrq7.