Advantech WebAccess Node bwrunmie Command Injection Remote Code Execution Vulnerability

2019-04-02T00:00:00
ID ZDI-19-326
Type zdi
Reporter Mat Powell of Trend Micro Zero Day Initiative
Modified 2019-06-22T00:00:00

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability. The specific flaw exists within bwrunmie.exe, which is accessed through the 0x2711 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of Administrator.