CVE-2018-7495 – Advantech WebAccess Node webvrpcs drawsrv Arbitrary File Deletion Vulnerability

https://notcve.org/view.php?id=CVE-2018-7495

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, an external control of file name or path vulnerability has been identified, which may allow an attacker to delete files. 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, se ha identificado una vulnerabilidad de control externo del nombre de archivo o ruta que podría permitir que un atacante elimine archivos. This vulnerability allows remote attackers to delete arbitrary files on vulnerable installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the 0x2715 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. • http://www.securityfocus.com/bid/104190 https://ics-cert.us-cert.gov/advisories/ICSA-18-135-01 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-73: External Control of File Name or Path •