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TI-2018-14379 Aliases CVE-2018-20321GHSA-9qq2-xhmc-h9qr

An issue was discovered in Rancher 2 through 2.1.5.

Priority MEDIUM 42CWE-668Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-288.

Summary

An issue was discovered in Rancher 2 through 2.1.5. Any project member with access to the default namespace can mount the netes-default service account in a pod, and then use that pod to execute administrative privileged commands against the k8s cluster. This could be mitigated by isolating the default namespace in a separate project, where only cluster admins can be given permissions to access. As of 2018-12-20, this bug affected ALL clusters created or imported by Rancher.

Why it matters now

EPSS 0.01766 78th percentileScored 2026-11-07
Fix Fixed github.com/rancher/rancher (Go): 2.1.6

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—github.com/rancher/rancher (Go)2.0.0 to before 2.1.62.1.6Patch availableGHSA-9qq2-xhmc-h9qr
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • github.com/rancher/rancher (Go) Vendor— Affected 2.0.0 to before 2.1.6 Fixed in 2.1.6 Patch available GHSA-9qq2-xhmc-h9qr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*2.0.0 – 2.1.5VulnerableSUSE
  • cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:* Versions 2.0.0 – 2.1.5 Vulnerable ·SUSE

Remediation

  • Fix · GHSA-9qq2-xhmc-h9qr github.com/rancher/rancher (Go) Fixed in 2.1.6 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20321
  2. 2026-10-03 Alias added: GHSA-9qq2-xhmc-h9qr

References

Advisory 3

Other 4

  • 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
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences