CVE-2023-5043

HIGH

ingress-nginx < 1.9.0 - OS Command Injection via Annotation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-5043. PoCs published by r0binak.

AI-analyzed exploit summary This repository provides a functional proof-of-concept exploit for CVE-2023-5043, demonstrating arbitrary command execution via ingress nginx annotation injection. The exploit leverages a maliciously crafted configuration snippet to execute commands through a Lua block.

Description

Ingress nginx annotation injection causes arbitrary command execution.

Exploits (1)

nomisec WORKING POC
by r0binak · poc
https://github.com/r0binak/CVE-2023-5043

This repository provides a functional proof-of-concept exploit for CVE-2023-5043, demonstrating arbitrary command execution via ingress nginx annotation injection. The exploit leverages a maliciously crafted configuration snippet to execute commands through a Lua block.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Ingress NGINX Controller
Auth required
Prerequisites: Access to create Ingress resources in a Kubernetes cluster · Ingress NGINX Controller deployed
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (4)

Core 4
Core References
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/10/25/4
Issue Tracking, Mitigation, Vendor Advisory issue-tracking
https://github.com/kubernetes/ingress-nginx/issues/10571

Scores

CVSS v3 7.6
EPSS 0.0410
EPSS Percentile 88.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Details

CWE
CWE-74 CWE-20
Status published
Products (2)
k8s.io/ingress-nginx 0 - 1.9.0Go
kubernetes/ingress-nginx < 1.9.0
Published Oct 25, 2023
Tracked Since Feb 18, 2026