TippingPoint Zero Day Initiative

VIPA Automation WinPLC7 recv Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-17-112: February 28th, 2017


CVSS Score

Affected Vendors

Affected Products

    VIPA Automation WinPLC7

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of VIPA Automation WinPLC7. Authentication is not required to exploit this vulnerability.

The specific flaw exists within processing of TCP packets. The software fails to validate the length field within the packet before copying it to a stack buffer. An attacker can leverage this vulnerability to execute code in the context of the process.

Vendor Response

VIPA has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2016-04-28 - Vulnerability reported to vendor
    2017-02-28 - Coordinated public release of advisory


This vulnerability was discovered by:
    Ariele Caltabiano (kimiya)