CVE-2021-22797 – Schneider Electric EcoStruxure Control Expert Classic STU and STA File Parsing Directory Traversal Remote Code Execution Vulnerability

https://notcve.org/view.php?id=CVE-2021-22797

A CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal) vulnerability exists that could cause malicious script to be deployed in an unauthorized location and may result in code execution on the engineering workstation when a malicious project file is loaded in the engineering software. Affected Product: EcoStruxure Control Expert (V15.0 SP1 and prior, including former Unity Pro), EcoStruxure Process Expert (2020 and prior, including former HDCS), SCADAPack RemoteConnect for x70 (All versions) Una CWE-22: Se presenta una vulnerabilidad de Limitación inadecuada de un nombre de ruta a un directorio restringido (" Salto de Ruta") que podría causar la implementación de scripts maliciosos en una ubicación no autorizada y puede resultar en una ejecución de código en la estación de trabajo de ingeniería cuando es cargado un archivo de proyecto malicioso en el software de ingeniería. Producto afectado: EcoStruxure Control Expert (versiones V15.0 SP1 y anteriores, incluido el antiguo Unity Pro), EcoStruxure Process Expert (versiones 2020 y anteriores, incluido el antiguo HDCS), SCADAPack RemoteConnect para x70 (Todas las versiones) This vulnerability allows remote attackers to execute arbitrary code on affected installations of Schneider Electric EcoStruxure Control Expert Classic. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of STU and STA files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. • https://www.se.com/ww/en/download/document/SEVD-2021-257-01 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •