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CVE-2025-47276

Estado: AplazadaAlta (7.5)—

Actualizer is a single shell script solution to allow developers and embedded engineers to create Debian operating systems (OS). Prior to version 1.2.0, Actualizer uses OpenSSL's "-passwd" function, which uses SHA512 instead of a more suitable password hasher like Yescript/Argon2i. All Actualizer users building a full Debian Operating System are affected. Users should upgrade to version 1.2.0 of Actualizer. Existing OS deployment requires manual password changes against the alpha and root accounts. The change will deploy's Debian's yescript overriding the older SHA512 hash created by OpenSSL. As a workaround, users need to reset both `root` and "Alpha" users' passwords.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Actualizer entrega OpenSSL con SHA512 débil en lugar de Argon2i; atacantes pueden crackear credenciales de root/alpha. Cadena de suministro (T1195) porque afecta a sistemas compilados con versiones vulnerables; T1078.001 (credenciales válidas de cuentas locales) como impacto principal tras crackear

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Password PoliciesApplication Developer GuidanceVulnerability ScanningUser Account ManagementPrivileged Account ManagementMulti-factor Authentication

Tecnologías afectadas (3)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Actualizer — ActualizerAIDebian — DebianAIOpenssl — OpensslAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-47276",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-47276",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-05-13T19:31:14.270803Z"
        }
      }
    ],
    "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:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "ChewKeanHo",
          "product": "Actualizer",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.2.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-05-13T16:15:32.037",
  "references": [
    {
      "url": "https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ChewKeanHo/Actualizer/commit/32c9cc232c856f078f8269fba80ce7562bbff86b",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ChewKeanHo/Actualizer/issues/1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ChewKeanHo/Actualizer/releases/tag/v1.2.0",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ChewKeanHo/Actualizer/security/advisories/GHSA-v626-chv9-v9qr",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/openssl/openssl/issues/19340",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://www.reddit.com/r/debian/comments/1kknzqi/actualizer_v110_upgraded",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-328"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Actualizer is a single shell script solution to allow developers and embedded engineers to create Debian operating systems (OS). Prior to version 1.2.0, Actualizer uses OpenSSL's  \"-passwd\" function, which uses SHA512 instead of a more suitable password hasher like Yescript/Argon2i. All Actualizer users building a full Debian Operating System are affected. Users should upgrade to version 1.2.0 of Actualizer. Existing OS deployment requires manual password changes against the alpha and root accounts. The change will deploy's Debian's yescript overriding the older SHA512 hash created by OpenSSL. As a workaround, users need to reset both `root` and \"Alpha\" users' passwords."
    },
    {
      "lang": "es",
      "value": "Actualizer es una solución de script de shell único que permite a desarrolladores e ingenieros de sistemas integrados crear sistemas operativos Debian (SO). Antes de la versión 1.2.0, Actualizer utilizaba la función \"-passwd\" de OpenSSL, que utiliza SHA512 en lugar de un hash de contraseñas más adecuado como Yescript/Argon2i. Todos los usuarios de Actualizer que creen un sistema operativo Debian completo se ven afectados. Los usuarios deben actualizar a la versión 1.2.0 de Actualizer. La implementación actual del SO requiere cambios manuales de contraseñas para las cuentas alfa y root. El cambio implementará el yescript de Debian, anulando el hash SHA512 anterior creado por OpenSSL. Como workaround, los usuarios deben restablecer las contraseñas de los usuarios `root` y `Alpha`."
    }
  ],
  "lastModified": "2026-06-17T09:27:39.153",
  "sourceIdentifier": "security-advisories@github.com"
}