CVE-2021-36784 Privilege escalation for users with create/update permissions in Global Roles

What is CVE-2021-36784?

CVE-2021-36784 is a high-severity vulnerability in SUSE Rancher, published on 2 May 2022. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A Improper Privilege Management vulnerability in SUSE Rancher allows users with the restricted-admin role to escalate to full admin. This issue affects: SUSE Rancher Rancher versions prior to 2.5.13; Rancher versions prior to 2.6.4.

Weakness: CWE-269

Which versions are affected by CVE-2021-36784?

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-2021-36784?

Upgrade github.com/rancher/rancher to a fixed version for your release line: 2.5.13 or 2.6.4.

Is CVE-2021-36784 being exploited?

There is no known exploitation of CVE-2021-36784 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-jwvr-vv7p-gpwq.