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.
Metrics
CVSS 2.0 8.3/10
AV:N/AC:M/Au:N/C:P/I:P/A:CWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01US Government Resource
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdfVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf
- http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01US Government Resource
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdfVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf
Timeline
- Published
- Sep 17, 2013
- Last modified
- Jun 16, 2026
- NVD status
- Modified