CVE-2014-2250

Name of the Vulnerable Software and Affected Versions Siemens SIMATIC S7-1200 CPU PLC devices with firmware prior to 4.0

Description The issue concerns a problem with the random-number generator in the authentication handler of the web server, which lacks sufficient entropy. This makes it easier for remote attackers to defeat cryptographic protection mechanisms. As a result, attackers can hijack sessions.

Recommendations For Siemens SIMATIC S7-1200 CPU PLC devices with firmware prior to 4.0, update the firmware to version 4.0 or later to resolve the issue.