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CVE-2023-42793

Estado: AnalizadaCrítica (9.8)⚠ Explotación activa💥 Exploit

In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible

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).

CISA KEV — explotada activamente

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

🎯 Técnicas ATT&CK

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

Bypass de autenticación en aplicación expuesta (AV:N/AC:L/PR:N) permite acceso no autorizado y ejecución remota. Explotación activa en ransomware confirma T1190 e T1078 (obtención de credenciales/cuentas).

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

Tecnologías afectadas (1)

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-42793",
  "cveTags": [],
  "metrics": {
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    },
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  ],
  "vulnStatus": "Analyzed",
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      "description": [
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          "value": "CWE-288"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible"
    },
    {
      "lang": "es",
      "value": "En JetBrains TeamCity antes de la versión 2023.05.4, era posible omitir la autenticación que conducía a RCE en TeamCity Server"
    }
  ],
  "lastModified": "2026-06-17T06:24:31.210",
  "cisaActionDue": "2023-10-25",
  "cisaExploitAdd": "2023-10-04",
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  "cisaRequiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "JetBrains TeamCity Authentication Bypass Vulnerability"
}