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CVE-2022-39197

Estado: AnalizadaMedia (6.1)⚠ Explotación activa

An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on the Cobalt Strike teamserver. To exploit the vulnerability, one must first inspect a Cobalt Strike payload, and then modify the username field in the payload (or create a new payload with the extracted information and then modify that username field to be malformed).

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

🎯 Técnicas ATT&CK

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

XSS (CWE-79) en teamserver de Cobalt Strike permite ejecutar código HTML/JavaScript mediante campo username malformado tras inspeccionar payload. Vector AV:N/UI:R indica interacción necesaria (inspección). Impacto: ejecución de scripts en cliente (T1059.007) y potencial manipulación de datos (T1565.

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

Restrict Web-Based ContentUser TrainingRestrict File and Directory PermissionsRemote Data StorageExecution PreventionBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Helpsystems — Cobalt Strike

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-39197",
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          "integrityImpact": "LOW",
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  "vulnStatus": "Analyzed",
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  "descriptions": [
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      "lang": "en",
      "value": "An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on the Cobalt Strike teamserver. To exploit the vulnerability, one must first inspect a Cobalt Strike payload, and then modify the username field in the payload (or create a new payload with the extracted information and then modify that username field to be malformed)."
    },
    {
      "lang": "es",
      "value": "Se encontró una vulnerabilidad de tipo XSS (Cross Site Scripting) en HelpSystems Cobalt Strike versiones hasta 4.7 que permitía a un atacante remoto ejecutar HTML en el servidor de equipos de Cobalt Strike. Para explotar la vulnerabilidad, uno debe primero inspeccionar una carga útil de Cobalt Strike y, a continuación, modificar el campo username en la carga útil (o crear una nueva carga útil con la información extraída y, a continuación, modificar ese campo username para que esté malformado)"
    }
  ],
  "lastModified": "2026-06-17T04:57:53.710",
  "cisaActionDue": "2023-04-20",
  "cisaExploitAdd": "2023-03-30",
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  "sourceIdentifier": "cve@mitre.org",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Fortra Cobalt Strike Teamserver Cross-Site Scripting (XSS) Vulnerability"
}