Descripción
Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to webauth_operation.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.
Acción recomendada
Aplicar las mitigaciones del fabricante; si no están disponibles, discontinuar el uso del producto.
Referencias
- Aviso de supportportal.juniper.net supportportal.juniper.net/s/article/2023-08-Out-of-Cycle-Security-Bul…
- Ficha en NVD (NIST) nvd.nist.gov/vuln/detail/CVE-2023-36851
Otras vulnerabilidades de Juniper en el catálogo
- CVE-2015-7755 Vulnerabilidad de autenticación incorrecta en Juniper ScreenOS Alta 02-10-2025
- CVE-2025-21590 Vulnerabilidad de aislamiento o compartimentación incorrectos en Juniper Junos OS Alta 13-03-2025
- CVE-2023-36847 Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability Alta 13-11-2023
- CVE-2023-36846 Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability Alta 13-11-2023
- CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability Alta 13-11-2023