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CVE-2025-8454

Estado: AnalizadaCrítica (9.8)—

It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer easier), skips OpenPGP verification if the upstream source is already downloaded from a previous run even if the verification failed back then.

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.

uscan expone verificación débil de firmas (CWE-347) en descarga remota de paquetes (AV:N, PR:N, UI:N); permite ejecutar código no verificado (T1553.006) o manipular datos entregados (T1565.002).

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

Privileged Account ManagementVulnerability ScanningRestrict Registry PermissionsNetwork SegmentationLimit Access to Resource Over NetworkFilter Network Traffic

Tecnologías afectadas (1)

Debian — Devscripts

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-8454",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-8454",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
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              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
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          "version": "2.0.3",
          "timestamp": "2025-08-01T13:45:28.913524Z"
        }
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "Debian",
          "product": "devscripts",
          "versions": [
            {
              "status": "affected",
              "version": "0"
            }
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-08-01T06:15:29.493",
  "references": [
    {
      "url": "https://bugs.debian.org/1109251",
      "tags": [
        "Issue Tracking",
        "Mailing List"
      ],
      "source": "security@debian.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "value": "CWE-347"
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  "descriptions": [
    {
      "lang": "en",
      "value": "It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer easier), skips OpenPGP verification if the upstream source is already downloaded from a previous run even if the verification failed back then."
    },
    {
      "lang": "es",
      "value": "Se descubrió que uscan, una herramienta para escanear o vigilar fuentes originales en busca de nuevas versiones de software, incluida en devscripts (una colección de scripts para facilitar la vida del fabricante de paquetes Debian), omite la verificación OpenPGP para archivos ya descargados incluso si una verificación previa falló."
    }
  ],
  "lastModified": "2026-06-17T10:07:01.327",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:debian:devscripts:2.25.15:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "03D0F848-1E33-47BF-8523-03792C46EC92"
            }
          ],
          "operator": "OR"
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}