PT-2017-03: Buffer Overflow in Checker ATM Security

Vulnerable software

Checker ATM Security
Version: 4.x, 5.x


Severity level

Severity level: High
Impact: Remote Code Execution
Access Vector: Remote

CVSS v3:
Base Score: 8.8
Vector: (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVE: CVE-2017-6968

Software description

Checker ATM Security protects ATMs by enforcing a wide range of restrictions in software: whitelisting with Application Control to block unauthorized applications, blocking attempts to connect keyboards and mice, limiting network connections with a firewall, and more.

Vulnerability description

The specialists of the Positive Research center have detected a Buffer Overflow vulnerability in hecker ATM Security.

An attacker able to spoof the control server can cause a buffer overflow and execute arbitrary code.

How to fix

Update your software up to the latest version

Advisory status

18.01.2017 - Vendor gets vulnerability details
06.04.2017 - Vendor releases fixed version and details
04.05.2017 - Public disclosure


The vulnerability was detected by Georgy Zaytsev, Positive Research Center (Positive Technologies Company)


Reports on the vulnerabilities previously discovered by Positive Research:

About Positive Technologies

Positive Technologies is a leading provider of vulnerability assessment, compliance management and threat analysis solutions to more than 1,000 global enterprise clients. Our solutions work seamlessly across your entire business: securing applications in development; assessing your network and application vulnerabilities; assuring compliance with regulatory requirements; and blocking real-time attacks. Our commitment to clients and research has earned Positive Technologies a reputation as one of the foremost authorities on SCADA, Banking, Telecom, Web Application and ERP security, and distinction as the #1 fastest growing Security and Vulnerability Management firm in 2012, as shown in an IDC report*. To learn more about Positive Technologies please visit

*Source: IDC Worldwide Security and Vulnerability Management 2013-2017 Forecast and 2012 Vendor Shares, doc #242465, August 2013. Based on year-over-year revenue growth in 2012 for vendors with revenues of $20M+