CVE-2014-2251

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.3 UNKNOWN
NETWORK
MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:C
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 74%
VendorProductVersion
siemenssimatic_s7-1500_cpu_firmware
𝑥
≤ 1.1.2
siemenssimatic_s7-1500_cpu_firmware
1.0.1
siemenssimatic_s7-1500_cpu_firmware
1.1.0
siemenssimatic_s7-1500_cpu_firmware
1.1.1
𝑥
= Vulnerable software versions
References
http://ics-cert.us-cert.gov/advisories/ICSA-14-073-01
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf
http://ics-cert.us-cert.gov/advisories/ICSA-14-073-01
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-456423.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-456423.pdf