CVE-2023-22647 Rancher vulnerable to Privilege Escalation via manipulation of Secrets

What is CVE-2023-22647?

CVE-2023-22647 is a critical vulnerability in SUSE Rancher, published on 1 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An Improper Privilege Management vulnerability in SUSE Rancher allowed standard users to leverage their existing permissions to manipulate Kubernetes secrets in the local cluster, resulting in the secret being deleted, but their read-level permissions to the secret being preserved. When this operation was followed-up by other specially crafted commands, it could result in the user gaining access to tokens belonging to service accounts in the local cluster.

This issue affects Rancher: from >= 2.6.0 before < 2.6.13, from >= 2.7.0 before < 2.7.4.

Weakness: CWE-267

Which versions are affected by CVE-2023-22647?

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-2023-22647?

Upgrade github.com/rancher/rancher to a fixed version for your release line: 2.6.13 or 2.7.4.

Is CVE-2023-22647 being exploited?

There is no known exploitation of CVE-2023-22647 in the wild and no public exploit code.

Other vulnerabilities in SUSE Rancher

• 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
• CVE-2019-11202 Rancher Recreates Default User With Known Password Despite Deletion Critical 9.8

Sources

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

Also known as GHSA-p976-h52c-26p6.