CVE-2013-5709 Information

Description

The authentication implementation in the web server on Siemens SCALANCE X-200 switches with firmware before 5.0.0 does not use a sufficient source of entropy for generating values of random numbers which makes it easier for remote attackers to hijack sessions by predicting a value.

Reference

http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01 http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf