SB2023103025 - Multiple vulnerabilities in Ingress-NGINX Controller for Kubernetes

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Main Vulnerability Database SB2023103025

SB2023103025 - Multiple vulnerabilities in Ingress-NGINX Controller for Kubernetes

Published: October 30, 2023 Updated: January 15, 2024

Security Bulletin ID SB2023103025
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Medium 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) OS Command Injection (CVE-ID: CVE-2023-5043)

The vulnerability allows a remote user to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation in the nginx.ingress.kubernetes.io/configuration-snippet annotation. A remote user can pass specially crafted data to the application, execute arbitrary OS commands and obtain the credentials of the ingress-nginx controller.


2) Code Injection (CVE-ID: CVE-2023-5044)

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the nginx.ingress.kubernetes.io/permanent-redirect annotation on an Ingress object. A remote user can send a specially crafted request, inject arbitrary commands, and obtain the credentials of the ingress-nginx controller.


3) Input validation error (CVE-ID: CVE-2022-4886)

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user who can create or update ingress objects can use directives to bypass the sanitization of the spec.rules[].http.paths[].path field of an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller.


Remediation

Install update from vendor's website.

References