Rancher: Downstream cluster privilege escalation through cluster and project role template binding (CRTB/PRTB)
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SUSE | Rancher | Rancher to before 2.6.7 | 2.6.7 | Patch available | CNA |
| SUSE | Rancher | Rancher to before 2.5.16 | 2.5.16 | Patch available | CNA |
| — | github.com/rancher/rancher (Go) | 2.5.0 to before 2.5.16 | 2.5.16 | Patch available | GHSA-6x34-89p7-95wg |
| — | github.com/rancher/rancher (Go) | 2.6.0 to before 2.6.7 | 2.6.7 | Patch available | GHSA-6x34-89p7-95wg |
- Rancher VendorSUSE Affected Rancher to before 2.6.7 Fixed in 2.6.7 Patch available CNA
- Rancher VendorSUSE Affected Rancher to before 2.5.16 Fixed in 2.5.16 Patch available CNA
- github.com/rancher/rancher (Go) Vendor— Affected 2.5.0 to before 2.5.16 Fixed in 2.5.16 Patch available GHSA-6x34-89p7-95wg
- github.com/rancher/rancher (Go) Vendor— Affected 2.6.0 to before 2.6.7 Fixed in 2.6.7 Patch available GHSA-6x34-89p7-95wg
Remediation
- Fix · CNA Rancher (SUSE) Fixed in 2.6.7
- Fix · CNA Rancher (SUSE) Fixed in 2.5.16
- Fix · GHSA-6x34-89p7-95wg github.com/rancher/rancher (Go) Fixed in 2.5.16 Advisory →
- Fix · GHSA-6x34-89p7-95wg github.com/rancher/rancher (Go) Fixed in 2.6.7 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
SUSE Rancher 2.5.16, 2.6.7
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2021-14903 Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io objectPriority MEDIUM 49
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31247
- 2026-10-03 Alias added: GHSA-6x34-89p7-95wg
References
More SUSE Rancher vulnerabilities
- TI-2021-14903 Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object CVSS 3.1CRITICAL 9.9
- TI-2022-21489 Rancher: Non-random authentication token CVSS 3.1CRITICAL 9.8
- TI-2019-08380 An issue was discovered that affects the following versions of Rancher: v2.0.0 through… CVSS 3.0CRITICAL 9.8
- TI-2023-08827 Improper privilege management in SUSE Rancher CVSS 3.1CRITICAL 9.9
- TI-2023-08823 Improper privilege management in SUSE Rancher CVSS 3.1CRITICAL 9.9
- TI-2022-21491 Rancher: Exposure of sensitive fields CVSS 3.1CRITICAL 9.9
Sources
- CVE-2022-31247 · CVE Program
- CVE-2022-31247 · NVD
- FIRST EPSS
- GHSA-6x34-89p7-95wg · GitHub Advisory Database · CC BY 4.0
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