{"id":"CVE-2024-58259","aliases":["GHSA-4h45-jpvh-6p5j","GO-2025-3923"],"url":"https://o3.security/vulnerability/CVE-2024-58259","summary":"Rancher affected by unauthenticated Denial of Service","details":"### Impact\nA vulnerability has been identified within Rancher Manager in which it did not enforce request body size limits on certain public (unauthenticated) and authenticated API endpoints. This allows a malicious user to exploit this by sending excessively large payloads, which are fully loaded into memory during processing. This could result in:\n- Denial of Service (DoS): The server process may crash or become unresponsive when memory consumption exceeds available resources.\n- Unauthenticated and authenticated exploitation: While the issue was initially observed in unauthenticated `/v3-public/*` endpoints, the absence of request body size limits also affected several authenticated APIs, broadening the potential attack surface. It's worth noting that other areas in Rancher do implement safeguards: requests proxied to Kubernetes APIs are subject to built-in size limits enforced by the [Kubernetes API server itself](https://github.com/kubernetes/kubernetes/blob/v1.33.4/staging/src/k8s.io/apiserver/pkg/server/config.go#L465), and Norman-based endpoints parse input with [predefined size caps](https://github.com/rancher/norman/blob/41dfae2f1a640c5ac9304e8b51e45a0f52cbdbb9/parse/read_input.go#L20-L31). However, the absence of similar protections in other Rancher APIs increased the risk of denial-of-service (DoS) scenarios in certain contexts.\n\nBy sending large binary or text payloads to vulnerable endpoints, a malicious actor could disrupt Rancher’s availability, impacting both administrative and user operations across managed clusters.\n \nPlease consult the associated  [MITRE ATT&CK - Technique - Network Denial of Service](https://attack.mitre.org/techniques/T1498/) for further information about this category of attack.\n\n### Patches\nThis vulnerability is addressed by adding a default limit of `1MiB` and a setting in case this value needs to be increased.\n\nPatched versions of Rancher include releases `v2.12.1`, `v2.11.5`, `v2.10.9` and `v2.9.12`.\n\n### Workarounds\nIf you can't upgrade to a fixed version, please make sure that you are manually setting the request body size limits. For example, using nginx-ingress controller and only allowing requests via the ingress. For reference on how to configure the limit manually, please consult the [Knowledge Base](https://www.suse.com/support/kb/doc/?id=000021309).\n\n### References\nIf you have any questions or comments about this advisory:\n- Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries.\n- Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository.\n- Verify with our [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).","published":"2025-09-02T11:53:03.928Z","modified":"2026-08-12T03:51:12.438214686Z","cvss":{"score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"2.12.1"},{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"2.11.5"},{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"2.10.9"},{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"2.9.11"},{"ecosystem":"Go","name":"github.com/rancher/rancher","fixedVersion":"0.0.0-20250813072957-aee95d4e2a41"}],"fix":{"url":"https://github.com/rancher/rancher/commit/aee95d4e2a41ba2df6f88c9634d4fe1f42dee4d9","label":"rancher/rancher@aee95d4"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58259.json"},{"type":"ADVISORY","url":"https://github.com/rancher/rancher/security/advisories/GHSA-4h45-jpvh-6p5j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-58259"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2024-58259"},{"type":"WEB","url":"https://github.com/rancher/rancher/commit/aee95d4e2a41ba2df6f88c9634d4fe1f42dee4d9"},{"type":"PACKAGE","url":"https://github.com/rancher/rancher"},{"type":"WEB","url":"https://github.com/rancher/rancher/releases/tag/v2.10.9"},{"type":"WEB","url":"https://github.com/rancher/rancher/releases/tag/v2.11.5"},{"type":"WEB","url":"https://github.com/rancher/rancher/releases/tag/v2.12.1"},{"type":"WEB","url":"https://github.com/rancher/rancher/releases/tag/v2.9.11"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:12.438214686Z"}}