Permanent Redirect Vulnerability in Nginx Ingress
CVE-2023-5044

7.6HIGH

Key Information:

Vendor

Kubernetes
Status
Ingress-nginx
Vendor
CVE Published:
25 October 2023

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-5044?

A vulnerability exists within the NGINX Ingress Controller, allowing for code injection through the 'nginx.ingress.kubernetes.io/permanent-redirect' annotation. This flaw can be exploited by attackers to manipulate backend server responses, potentially leading to unauthorized access or arbitrary code execution. Users are encouraged to review their implementations and upgrade to mitigate these risks.

Affected Version(s)

ingress-nginx 0 < 1.9.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-5044
Created by r0binak

cve-2023-5044
Created by 4ARMED

References

https://github.com/kubernetes/ingress-nginx/issues/10572
issue-tracking
https://groups.google.com/g/kubernetes-security-announce/...
mailing-list
http://www.openwall.com/lists/oss-security/2023/10/25/3

EPSS Score

7% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jan-Otto Kröpke (Cloudeteer GmbH)
.
CVE-2023-5044 : Permanent Redirect Vulnerability in Nginx Ingress