CVE-2022-4886: Ingress-nginx `path` sanitization can be bypassed with `log_format` directive
First published: Wed Oct 25 2023(Updated: )
Ingress-nginx `path` sanitization can be bypassed with `log_format` directive.
Credit: jordan@liggitt.net jordan@liggitt.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Kubernetes ingress-nginx | <1.8.0 | |
| go/k8s.io/ingress-nginx | <1.8.0 | 1.8.0 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2023/10/25/5
- https://github.com/kubernetes/ingress-nginx/issues/10570
- https://groups.google.com/g/kubernetes-security-announce/c/ge7u3qCwZLI
- https://nvd.nist.gov/vuln/detail/CVE-2022-4886
- https://github.com/advisories/GHSA-gvrm-w2f9-f77q (Advisory)
- https://security.netapp.com/advisory/ntap-20240307-0013/
- https://security.netapp.com/advisory/ntap-20240307-0013
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2022-4886.
What is the severity of CVE-2022-4886?
The severity of CVE-2022-4886 is high, with a CVSS score of 8.8.
Which software is affected by CVE-2022-4886?
Ingress-nginx version up to 1.8.0 in Kubernetes is affected by CVE-2022-4886.
How can the `path` sanitization be bypassed in Ingress-nginx?
The `path` sanitization in Ingress-nginx can be bypassed by using the `log_format` directive.
Is there a fix for CVE-2022-4886?
Yes, upgrading to a version of Ingress-nginx above 1.8.0 will fix CVE-2022-4886.
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