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Fencer Intel
high 8.8

CVE-2019-12274 json

Rancher Privilege Escalation Vulnerability

published 7y ago modified last mo. also GHSA-gc62-j469-9gjm , GO-2023-1991 , EUVD-2022-3935

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

In Rancher 1 and 2 through 2.2.3, unprivileged users (if allowed to deploy nodes) can gain admin access to the Rancher management plane because node driver options intentionally allow posting certain data to the cloud. The problem is that a user could choose to post a sensitive file such as /root/.kube/config or /var/lib/rancher/management-state/cred/kubeconfig-system.yaml.

Patch / fix

  • go github.com/rancher/rancher 1.6.27, 2.2.4, 2.2.4+incompatible

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Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/rancher/rancher
>=2.0.0, <2.2.4
<1.6.27
>=2.0.0+incompatible, <2.2.4+incompatible
2.2.4
1.6.27
2.2.4+incompatible

Classification

Weakness
  • CWE-668 Exposure of Resource to Wrong Sphere
  • CWE-862 Missing Authorization

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.