{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rancher/rancher"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.12.0"
            },
            {
              "fixed": "2.12.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rancher/rancher"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.11.0"
            },
            {
              "fixed": "2.11.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rancher/rancher"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.10.0"
            },
            {
              "fixed": "2.10.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rancher/rancher"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.9.0"
            },
            {
              "fixed": "2.9.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/rancher/rancher"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20250813072957-aee95d4e2a41"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-58259"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-08-29T15:38:23Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "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\u0027s 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\u2019s availability, impacting both administrative and user operations across managed clusters.\n \nPlease consult the associated  [MITRE ATT\u0026CK - 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\u0027t 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/).",
  "id": "GHSA-4h45-jpvh-6p5j",
  "modified": "2025-08-29T15:38:23Z",
  "published": "2025-08-29T15:38:23Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rancher/rancher/security/advisories/GHSA-4h45-jpvh-6p5j"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Rancher affected by unauthenticated Denial of Service"
}