CVE-2018-7505 – Advantech WebAccess NMS TFTP Unrestricted File Upload Remote Code Execution Vulnerability

https://notcve.org/view.php?id=CVE-2018-7505

In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, a TFTP application has unrestricted file uploads to the web application without authorization, which may allow an attacker to execute arbitrary code. En Advantech WebAccess en versiones V8.2_20170817 y anteriores, WebAccess en versiones V8.3.0 y anteriores, WebAccess Dashboard en versiones V.2.0.15 y anteriores, WebAccess Scada Node en versiones anteriores a la 8.3.1 y WebAccess/NMS 2.0.3 y anteriores, una aplicación TFTP tiene subidas de archivo sin restricciones, lo que podría permitir que un atacante ejecute código arbitrario. This vulnerability allows remote attackers to execute code on vulnerable installations of Advantech WebAccess NMS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the TFTP service. The issue results from the lack of proper validation of user-supplied data, which can allow for the upload of arbitrary files. • http://www.securityfocus.com/bid/104190 https://ics-cert.us-cert.gov/advisories/ICSA-18-135-01 • CWE-264: Permissions, Privileges, and Access Controls CWE-434: Unrestricted Upload of File with Dangerous Type •