CVE-2024-42365

Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with `write=originate` may change all configuration files in the `/etc/asterisk/` directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the `FILE` function inside the `SET` application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.

Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with `write=originate` may change all configuration files in the `/etc/asterisk/` directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the `FILE` function inside the `SET` application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.

Asterisk es un kit de herramientas de telefonía y centralita privada (PBX) de código abierto. Antes de las versiones de asterisk 18.24.2, 20.9.2 y 21.4.2 y de las versiones de asterisco certificado 18.9-cert11 y 20.7-cert2, un usuario de AMI con `write=originate` podía cambiar todos los archivos de configuración en `/etc/asterisk. /` directorio. Esto ocurre porque pueden curvar archivos remotos y escribirlos en el disco, pero también pueden agregarlos a archivos existentes usando la función `FILE` dentro de la aplicación `SET`. Este problema puede provocar una escalada de privilegios, la ejecución remota de código y/o blind server-side request forgery con un protocolo arbitrario. Las versiones de Asterisk 18.24.2, 20.9.2 y 21.4.2 y las versiones de asterisco certificado 18.9-cert11 y 20.7-cert2 contienen una solución para este problema.