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CVE-2024-45049

Estado: AnalizadaAlta (7.5)—

Hydra is a Continuous Integration service for Nix based projects. It is possible to trigger evaluations in Hydra without any authentication. Depending on the size of evaluations, this can impact the availability of systems. The problem can be fixed by applying https://github.com/NixOS/hydra/commit/f73043378907c2c7e44f633ad764c8bdd1c947d5 to any Hydra package. Users are advised to upgrade. Users unable to upgrade should deny the `/api/push` route in a reverse proxy. This also breaks the "Evaluate jobset" button in the frontend.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Nixos — Hydra

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-45049",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-45049",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-08-28T14:01:29.127323Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "NixOS",
          "product": "hydra",
          "versions": [
            {
              "status": "affected",
              "version": "< f73043378907c2c7e44f633ad764c8bdd1c947d5"
            }
          ]
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:nixos:hydra:-:*:*:*:*:*:*:*"
          ],
          "vendor": "nixos",
          "product": "hydra",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "f73043378907c2c7e44f633ad764c8bdd1c947d5",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2024-08-27T21:15:07.603",
  "references": [
    {
      "url": "https://github.com/NixOS/hydra/commit/f73043378907c2c7e44f633ad764c8bdd1c947d5",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NixOS/hydra/security/advisories/GHSA-xv29-v93r-2f5v",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/NixOS/nixpkgs/pull/337766",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://mastodon.delroth.net/@delroth/113029832631860419",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hydra is a Continuous Integration service for Nix based projects. It is possible to trigger evaluations in Hydra without any authentication. Depending on the size of evaluations, this can impact the availability of systems. The problem can be fixed by applying https://github.com/NixOS/hydra/commit/f73043378907c2c7e44f633ad764c8bdd1c947d5 to any Hydra package. Users are advised to upgrade. Users unable to upgrade should deny the `/api/push` route in a reverse proxy. This also breaks the \"Evaluate jobset\" button in the frontend."
    },
    {
      "lang": "es",
      "value": "Hydra es un servicio de integración continua para proyectos basados en Nix. Es posible activar evaluaciones en Hydra sin ninguna autenticación. Dependiendo del tamaño de las evaluaciones, esto puede afectar la disponibilidad de los sistemas. El problema se puede solucionar aplicando https://github.com/NixOS/hydra/commit/f73043378907c2c7e44f633ad764c8bdd1c947d5 a cualquier paquete Hydra. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben rechazar la ruta `/api/push` en un proxy inverso. Esto también rompe el botón \"Evaluar conjunto de trabajos\" en la interfaz."
    }
  ],
  "lastModified": "2026-06-17T07:53:29.653",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:nixos:hydra:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DF6BCDD1-5E83-41DE-91B0-075AA8F6A395",
              "versionEndExcluding": "2024-08-27"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}