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Fencer Intel
high 8.8

CVE-2018-1000400 json

Kubernetes CRI-O version prior to 1.9 contains a Privilege Context Switching Error (CWE-270) vulnerability in the handling of ambient capab…

published 8y ago modified 4mo ago also EUVD-2018-1897

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

Kubernetes CRI-O version prior to 1.9 contains a Privilege Context Switching Error (CWE-270) vulnerability in the handling of ambient capabilities that can result in containers running with elevated privileges, allowing users abilities they should not have. This attack appears to be exploitable via container execution. This vulnerability appears to have been fixed in 1.9.

Patch / fix

  • kubernetes cri-o 1.9.0
  • cri-o openshift 3.9 1.9.12-1.gitfa11beb.el7
  • cri-tools openshift 3.9 1.0.0-5.rhaos3.9.git8e6013a.el7
  • atomic-openshift openshift 3.9 3.9.30-1.git.0.dec1ba7.el7
  • openshift-ansible openshift 3.9 3.9.30-1.git.7.46f8678.el7
  • atomic-openshift-pod openshift 3.9 3.9.30-1.git.0.dec1ba7.el7
  • atomic-openshift-node openshift 3.9 3.9.30-1.git.0.dec1ba7.el7
  • atomic-openshift-tests openshift 3.9 3.9.30-1.git.0.dec1ba7.el7
  • atomic-openshift-utils openshift 3.9 3.9.30-1.git.7.46f8678.el7

red hat advisories RHBA-2018:1796

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1000400 updated cvss 4.3

cri-o: capabilities are not dropped when switching to a non-root user

  • Red Hat OpenShift Container Platform 3.9 cri-o 1.9.12-1.gitfa11beb.el7, cri-tools 1.0.0-5.rhaos3.9.git8e6013a.el7, atomic-openshift 3.9.30-1.git.0.dec1ba7.el7, openshift-ansible 3.9.30-1.git.7.46f8678.el7, atomic-openshift-pod 3.9.30-1.git.0.dec1ba7.el7, atomic-openshift-node 3.9.30-1.git.0.dec1ba7.el7, +20 more
    fixed: vendor fix RHBA-2018:1796
  • Red Hat OpenShift Container Platform 3.10 cri-o Red Hat OpenShift Container Platform 3.11 cri-o Red Hat OpenShift Container Platform 4 cri-o
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.97% chance of exploitation in the next 30 days, higher than 80% 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 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-269 Improper Privilege Management

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.