CVE-2024-37893

{
  "id": "CVE-2024-37893",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-37893",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-15T19:20:53.573120Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "firefly-iii",
          "product": "firefly-iii",
          "versions": [
            {
              "status": "affected",
              "version": "< 6.1.17"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-06-17T20:15:13.700",
  "references": [
    {
      "url": "https://github.com/firefly-iii/firefly-iii/security/advisories/GHSA-4gm4-c4mh-4p7w",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://owasp.org/www-community/attacks/Password_Spraying_Attack",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://www.menlosecurity.com/what-is/highly-evasive-adaptive-threats-heat/mfa-bypass",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/firefly-iii/firefly-iii/security/advisories/GHSA-4gm4-c4mh-4p7w",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://owasp.org/www-community/attacks/Password_Spraying_Attack",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.menlosecurity.com/what-is/highly-evasive-adaptive-threats-heat/mfa-bypass",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Firefly III is a free and open source personal finance manager. In affected versions an MFA bypass in the Firefly III OAuth flow may allow malicious users to bypass the MFA-check. This allows malicious users to use password spraying to gain access to Firefly III data using passwords stolen from other sources. As OAuth applications are easily enumerable using an incrementing id, an attacker could try sign an OAuth application up to a users profile quite easily if they have created one. The attacker would also need to know the victims username and password. This problem has been patched in Firefly III v6.1.17 and up. Users are advised to upgrade. Users unable to upgrade should Use a unique password for their Firefly III instance and store their password securely, i.e. in a password manager."
    },
    {
      "lang": "es",
      "value": "Firefly III es un administrador de finanzas personales gratuito y de código abierto. En las versiones afectadas, una omisión de MFA en el flujo OAuth del Firefly III puede permitir a usuarios malintencionados omitir la verificación de MFA. Esto permite a usuarios malintencionados utilizar la pulverización de contraseñas para obtener acceso a los datos de Firefly III utilizando contraseñas robadas de otras fuentes. Como las aplicaciones OAuth se pueden enumerar fácilmente utilizando una identificación incremental, un atacante podría intentar registrar una aplicación OAuth en el perfil de un usuario con bastante facilidad si ha creado uno. El atacante también necesitaría saber el nombre de usuario y la contraseña de la víctima. Este problema se solucionó en Firefly III v6.1.17 y versiones posteriores. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben utilizar una contraseña única para su instancia de Firefly III y almacenarla de forma segura, es decir, en un administrador de contraseñas."
    }
  ],
  "lastModified": "2026-06-17T07:39:00.117",
  "sourceIdentifier": "security-advisories@github.com"
}