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NVD / CVE Program· CNA mitre

CVE-2018-1000400: Kubernetes CRI-O version prior to 1.9 contains a Privilege Context Switching Error (CWE-270) vulnerability in the handling of ambient…

Noroxi assessment

Priority: Monitor (action score 36/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.9% (FIRST EPSS); higher than 80.5% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: n/a n/a 1.9.

Low priority for now. Upgrade to n/a n/a 1.9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 8.8 · v3.0—No exploit Fix available
Published
May 18, 2018
Updated
Jun 16, 2026
EPSS
1.9% · 80th percentile

Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.9%

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  • Not in KEV: no record of exploitation in the wild
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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
kubernetescri-o

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • kubernetes cri-obefore 1.9.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:openshift:3.9::el7atomic-openshiftbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-clientsbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-clients-redistributablebefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-cluster-capacitybefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-docker-excluderbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-dockerregistrybefore 0:3.9.30-1.git.349.8b7912c.el70:3.9.30-1.git.349.8b7912c.el7
Red Hat:openshift:3.9::el7atomic-openshift-excluderbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-federation-servicesbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-masterbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-nodebefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-podbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-sdn-ovsbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-service-catalogbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-template-service-brokerbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-testsbefore 0:3.9.30-1.git.0.dec1ba7.el70:3.9.30-1.git.0.dec1ba7.el7
Red Hat:openshift:3.9::el7atomic-openshift-utilsbefore 0:3.9.30-1.git.7.46f8678.el70:3.9.30-1.git.7.46f8678.el7
Red Hat:openshift:3.9::el7atomic-openshift-web-consolebefore 0:3.9.30-1.git.245.4a3aade.el70:3.9.30-1.git.245.4a3aade.el7
Red Hat:openshift:3.9::el7cri-obefore 0:1.9.12-1.gitfa11beb.el70:1.9.12-1.gitfa11beb.el7
Red Hat:openshift:3.9::el7cri-o-debuginfobefore 0:1.9.12-1.gitfa11beb.el70:1.9.12-1.gitfa11beb.el7
Red Hat:openshift:3.9::el7cri-toolsbefore 0:1.0.0-5.rhaos3.9.git8e6013a.el70:1.0.0-5.rhaos3.9.git8e6013a.el7
Red Hat:openshift:3.9::el7cri-tools-debuginfobefore 0:1.0.0-5.rhaos3.9.git8e6013a.el70:1.0.0-5.rhaos3.9.git8e6013a.el7
Red Hat:openshift:3.9::el7golang-github-prometheus-node_exporterbefore 0:3.9.30-1.git.890.7ea5173.el70:3.9.30-1.git.890.7ea5173.el7
Red Hat:openshift:3.9::el7openshift-ansiblebefore 0:3.9.30-1.git.7.46f8678.el70:3.9.30-1.git.7.46f8678.el7
Red Hat:openshift:3.9::el7openshift-ansible-docsbefore 0:3.9.30-1.git.7.46f8678.el70:3.9.30-1.git.7.46f8678.el7

+7

Same product

kubernetes: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0811A flaw was found in CRI-O in the way it set kernel options for a pod.
    41Plan
  • CVE-2024-5154Cri-o: malicious container can create symlink on host
    32Monitor
  • CVE-2022-4318Cri-o: /etc/passwd tampering privesc
    31Monitor

Published before and after this one in the same product

  • Later →CVE-2019-14891Nov 25, 2019 · A flaw was found in cri-o, as a result of all pod-related processes being placed in the same memory cgroup.
    20Monitor
  • Later →CVE-2022-0532Feb 9, 2022 · An incorrect sysctls validation vulnerability was found in CRI-O 1.18 and earlier.
    16Monitor
  • Later →CVE-2022-27652Apr 18, 2022 · A flaw was found in cri-o, where containers were incorrectly started with non-empty default permissions.
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
n/a n/a1.9 · descriptionVendor (CNA)
red hat:atomic-openshift0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-clients0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-clients-redistributable0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-cluster-capacity0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-docker-excluder0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-dockerregistry0:3.9.30-1.git.349.8b7912c.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-excluder0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-federation-services0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-master0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-node0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-pod0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)
red hat:atomic-openshift-sdn-ovs0:3.9.30-1.git.0.dec1ba7.el7 · Red Hat:openshift:3.9::el7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-269 · Improper Privilege Management

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

To simplify setup, a service account is granted broad, cluster-wide permissions. The principle of least privilege is skipped during installation.

The bug in code

The whole CWE-269 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

yaml
kind: ClusterRolerules:  - apiGroups: ["*"]    resources: ["*"]    verbs: ["*"]

Fixed

yaml
kind: Rolemetadata:  namespace: lodos-systemrules:  - apiGroups: ["apps"]    resources: ["deployments"]    verbs: ["get", "list", "update"]

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records