The specific flaw exists within implementation of the 0x138bd IOCTL in the webvrpcs process. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this functionality to execute code under the context of Administrator.
Advantech has issued an update to correct this vulnerability. More details can be found at:
|Steven Seeley (mr_me) of Offensive Security