Description
The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.
Metrics
CVSS 2.0 8.3/10
AV:N/AC:M/Au:N/C:P/I:P/A:CAffected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://ics-cert.us-cert.gov/advisories/ICSA-14-073-01US Government Resource
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdfPatch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
- http://ics-cert.us-cert.gov/advisories/ICSA-14-073-01US Government Resource
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdfPatch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
Timeline
- Published
- Mar 16, 2014
- Last modified
- Jun 17, 2026
- NVD status
- Modified