Siemens and ICS-CERT published advisories this week to alert users of improper authentication and privilege escalation vulnerabilities affecting some SIMATIC and XHQ products.
The SIMATIC communication processor (CP) of the Redundant Network Access (RNA) series, which is designed for connecting S7-400 CPUs to industrial ethernet, is affected by a critical vulnerability that allows a remote, unauthenticated attacker to perform administrative actions on a device.
The security hole, tracked as CVE-2017-6868, affects the SIMATIC CP 44x-1 RNA modules running versions prior to 1.4.1. The flaw can only be exploited if the attacker has network access to TCP port 102 and the processor’s configuration is stored on the corresponding CPU.
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