CVE-2023-5043
highpriority · attend · 46EPSS 0.026 · 85 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-27
Ingress nginx annotation injection causes arbitrary command execution.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- r0binak/CVE-2023-5043PoC CVE-2023-5043PoC · poc_in_github
affected products (7)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2024-0662IBM InfoSphere Information Server: Mehrere SchwachstellenDeutsch2024-03-19csaf · cert_bundDE
Ein entfernter, authentifizierter Angreifer kann mehrere Schwachstellen in IBM InfoSphere Information Server ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
- WID-SEC-W-2024-1591Juniper JUNOS: Mehrere SchwachstellenDeutsch2024-07-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive zu umgehen.
- GHSA-5wj4-wffq-3378Ingress nginx annotation injection causes arbitrary command execution2023-10-25ghsa · osvUS
### Issue Details A security issue was identified in ingress-nginx where the nginx.ingress.kubernetes.io/configuration-snippet annotation on an Ingress object (in the networking.k8s.io or extensions API group) can be used to inject arbitrary commands, and obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster. This issue has been rated High (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L), and assigned CVE-2023-5043. ### Affected Components and Configurations This bug affects ingress-nginx. If you do not have ingress-nginx installed on your cluster, you are not affected. You can check this by running kubectl get po -n ingress-nginx. If you are running the “chrooted” ingress-nginx controller introduced in v1.2.0 (gcr.io/k8s-staging-ingress-nginx/controller-chroot), command execution is possible but credential extraction is not, so the High severity does not apply. Multi-tenant environments where non-admin users have permissions to create Ingress objects are most affected by this issue. #### Affected Versions <v1.9.0 #### Versions allowing mitigation v1.9.0 ### Mitigation Ingress Administrators should set the --enable-annotation-validation flag to enforce restrictions on the contents of ingress-nginx annotation fields. ### Detection If you find evidence that this vulnerability has been exploited, please contact security@kubernetes.io ### Additional Details See ingress-nginx Issue [#10571](https://github.com/kubernetes/ingress-nginx/issues/10571) for more details. ### Acknowledgements This vulnerability was reported by suanve Thank You, CJ Cullen on behalf of the Kubernetes Security Response Committee
also known as (4)
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sources
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references (14)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2023/10/25/4cnnvd
- https://cxsecurity.com/cveshow/CVE-2023-5043/cnnvd
- https://github.com/kubernetes/ingress-nginxPatchcnnvd
- https://github.com/kubernetes/ingress-nginx/issues/10571cnnvd
- https://groups.google.com/g/kubernetes-security-announce/c/pVsXsOpxYZocnnvd
- https://security.netapp.com/advisory/ntap-20240307-0012/cnnvd
- http://www.openwall.com/lists/oss-security/2023/10/25/4enisa_euvd
- https://github.com/kubernetes/ingress-nginx/issues/10571enisa_euvd
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