PT-2022-10547 · Suse · Suse Rancher

Jonathan Mercier · Published 2022-04-01 · Updated 2024-06-05 · CVE-2021-36776

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions SUSE Rancher versions prior to 2.5.10

Description A Improper Access Control issue allows remote attackers to impersonate arbitrary users. This is due to the Steve API proxy not dropping the impersonation header before sending the request to the Kubernetes API, allowing an authenticated user to impersonate any user on a cluster. A malicious user with authenticated access could use this to impersonate another user with administrator access, receiving administrator level access in the cluster.

Recommendations For versions prior to 2.5.10, upgrade to release 2.5.10, 2.6.0, or later versions to resolve the issue. As a temporary workaround, limit access in SUSE Rancher to trusted users.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2021-36776

GHSA-GVH9-XGRQ-R8HW

GO-2024-2771

Affected Products

Suse Rancher

References · 9

• https://osv.dev/vulnerability/GO-2024-2771 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36776 · Security Note
• https://osv.dev/vulnerability/CVE-2021-36776 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-gvh9-xgrq-r8hw · Vendor Advisory
• https://github.com/rancher/rancher · Note
• https://github.com/advisories/GHSA-gvh9-xgrq-r8hw · Note
• https://t.me/cvenotify/28387 · Telegram Post
• https://t.me/cibsecurity/40095 · Telegram Post
• https://bugzilla.suse.com/show_bug.cgi?id=1189413 · Note