CVE-2017-11402
CriticalSummary
An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before version 03.2.00. Design flaws allow an attacker to remotely activate rules on the firewall and connect to any TCP port of a protected asset, thus bypassing the firewall.
Risk Assessment
This vulnerability poses a serious threat to organizational security, allowing attackers to access protected resources undetected by the firewall.
Recommendation
It is recommended to update devices to version 03.2.00 or later to address these design flaws and implement additional security measures.
Original NVD description (English source)
An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before 03.2.00. Design flaws in OPC classic and in custom netfilter modules allow an attacker to remotely activate rules on the firewall and to connect to any TCP port of a protected asset, thus bypassing the firewall. The attack methodology is a crafted OPC dynamic port shift.