CVE-2023-22651 Rancher Webhook is misconfigured during upgrade process

What is CVE-2023-22651?

CVE-2023-22651 is a critical vulnerability in SUSE Rancher, published on 4 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper Privilege Management vulnerability in SUSE Rancher allows Privilege Escalation. A failure in the update logic of Rancher's admission Webhook may lead to the misconfiguration of the Webhook. This component enforces validation rules and security checks before resources are admitted into the Kubernetes cluster. The issue only affects users that upgrade from 2.6.x or 2.7.x to 2.7.2. Users that did a fresh install of 2.7.2 (and did not follow an upgrade path) are not affected.

Weakness: CWE-276, CWE-269

Which versions are affected by CVE-2023-22651?

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-2023-22651?

Upgrade github.com/rancher/rancher to a fixed version for your release line: 0.0.0-20230424183121-6d9a175954c6 or 2.7.3.

Is CVE-2023-22651 being exploited?

There is no known exploitation of CVE-2023-22651 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-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-6m9f-pj6w-w87g.