|CVSS SCORE||9.8, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)|
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 BwOpcBs.exe, which is accessed through the 0x2711 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 vulnerability to execute code in the context of Administrator.
This vulnerability is being disclosed publicly without a patch in accordance with ZDI policies.
02/04/19 – ZDI provided the report to ICS-CERT
|CREDIT||Mat Powell of Trend Micro Zero Day Initiative