Home/CVE/The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficie
CVE

CVE-2014-2251

The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficie

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.

HIGH · CVSS 8.3 EPSS 0.00902
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Affected Products & Versions

2
siemens simatic s7-1500 cpu firmware<= 1.1.2
siemens simatic s7-1500 cpu firmwareall versions
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Scoring & Timeline

8.3
HIGH · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:P/I:P/A:C
Published to NVD16 Mar 2014 · 02:06 PM
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2014-icsa-14-073-01
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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.pdfPatchVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
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