What is CVE-2023-5043?

CVE-2023-5043 is a high-severity vulnerability in Kubernetes Ingress-nginx, classified under Improper Input Validation. CVSS score: 7.6/10. Published 2023-10-25.

How severe is CVE-2023-5043?

High severity. CVSS v3 base score is 7.6 out of 10.

Is CVE-2023-5043 known to be exploited?

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

Improper input validation in Kubernetes Ingress-nginx

CVE-2023-5043

Ingress nginx annotation injection causes arbitrary command execution.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.049 (89.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.

Affected products

Kubernetes Ingress-nginx — versions 0, 1.9.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

r0binak/CVE-2023-5043
nomi-sec/PoC-in-GitHub
zhanpengliu-tencent/medium-cve

References

github.com/kubernetes/ingress-nginx/issues/10571 (issue-tracking)
groups.google.com/g/kubernetes-security-announce/c/pVsXsOpxYZo (mailing-list)
www.openwall.com/lists/oss-security/2023/10/25/4
security.netapp.com/advisory/ntap-20240307-0012/

Frequently asked questions

What is CVE-2023-5043?: CVE-2023-5043 is a high-severity vulnerability in Kubernetes Ingress-nginx, classified under Improper Input Validation. CVSS score: 7.6/10. Published 2023-10-25.
How severe is CVE-2023-5043?: High severity. CVSS v3 base score is 7.6 out of 10.
Is CVE-2023-5043 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.