CVE-2021-4198

Una vulnerabilidad de Desreferencia de Puntero NULL en el componente messaging_ipc.dll utilizado en Bitdefender Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools y VPN Standalone permite a un atacante bloquear arbitrariamente los procesos del producto y generar archivos crashdump. Este problema afecta a: Las versiones de Bitdefender Total Security anteriores a la 26.0.3.29. Las versiones de Bitdefender Internet Security anteriores a la 26.0.3.29. Las versiones de Bitdefender Antivirus Plus anteriores a la 26.0.3.29. Versiones de Bitdefender Endpoint Security Tools anteriores a la 7.2.2.92. Versiones de Bitdefender VPN Standalone anteriores a la 25.5.0.48.

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Bitdefender Total Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Bitdefender Virus Shield. By creating a symbolic link, an attacker can abuse the service to delete files. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.