CVE-2022-31247 Rancher: Downstream cluster privilege escalation through cluster and project role template binding (CRTB/PRTB)

What is CVE-2022-31247?

CVE-2022-31247 is a critical vulnerability in SUSE Rancher, published on 7 Sep 2022. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An Improper Authorization vulnerability in SUSE Rancher, allows any user who has permissions to create/edit cluster role template bindings or project role template bindings (such as cluster-owner, manage cluster members, project-owner and manage project members) to gain owner permission in another project in the same cluster or in another project on a different downstream cluster. This issue affects: SUSE Rancher Rancher versions prior to 2.6.7; Rancher versions prior to 2.5.16.

Weakness: CWE-285

Which versions are affected by CVE-2022-31247?

4 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-2022-31247?

Upgrade github.com/rancher/rancher to a fixed version for your release line: 2.5.16 or 2.6.7.

Is CVE-2022-31247 being exploited?

There is no known exploitation of CVE-2022-31247 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-6x34-89p7-95wg.