What is CVE-2018-1000400?

CVE-2018-1000400 is a high-severity vulnerability in Kubernetes Cri-O, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2018-05-18.

How severe is CVE-2018-1000400?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2018-1000400 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Privilege escalation in Kubernetes Cri-O

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 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.

Vulnerability class: Privilege Escalation

EPSS: 0.021 (80.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Kubernetes Cri-o
N/a — versions n/a

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

Public proof-of-concept exploits

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2018-1000400?: CVE-2018-1000400 is a high-severity vulnerability in Kubernetes Cri-O, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2018-05-18.
How severe is CVE-2018-1000400?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-1000400 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.