CVE-2023-20154

Estado: AnalizadaAlta (8.1)—

A vulnerability in the external authentication mechanism of Cisco Modeling Labs could allow an unauthenticated, remote attacker to access the web interface with administrative privileges.

This vulnerability is due to the improper handling of certain messages that are returned by the associated external authentication server. An attacker could exploit this vulnerability by logging in to the web interface of an affected server. Under certain conditions, the authentication mechanism would be bypassed and the attacker would be logged in as an administrator.

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A successful exploit could allow the attacker to obtain administrative privileges on the web interface of an affected server, including the ability to access and modify every simulation and all user-created data. To exploit this vulnerability, the attacker would need valid user credentials that are stored on the associated external authentication server. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.91%
Percentil entre todas las CVEs puntuadas: 59
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1098.003 Additional Cloud Rolespersistence · privilege escalation80 %
Impacto secundarioT1005 Data from Local Systemcollection75 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact70 %

Vulnerabilidad en autenticación externa de Cisco Modeling Labs (CWE-305). AV:N/PR:L permite T1210 (explotación de servicio remoto con autenticación). Impacto: obtención de privilegios administrativos (T1098.003), acceso a datos de simulaciones (T1005) y modificación de datos del usuario (T1565.001).

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 Management Vulnerability Scanning User Account Management Threat Intelligence Program Restrict File and Directory Permissions Remote Data Storage

Tecnologías afectadas (1)

Cisco — Modeling Labs

CWE

CWE-305

Referencias

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cml-auth-bypass-4fUCCeG5

JSON original (NVD)

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