CVE-2014-2250
The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The random-number generator on Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors, a different vulnerability than CVE-2014-2251.
- CVSS 2.0
- 8.3 HIGHAV:N/AC:M/Au:N/C:P/I:P/A:C
- EPSS
- 3.16% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- siemens/simatic s7 cpu 1200 firmware · siemens/simatic s7 cpu-1211c · siemens/simatic s7 cpu 1212c · siemens/simatic s7 cpu 1214c · siemens/simatic s7 cpu 1215c · siemens/simatic s7 cpu 1217c
- Source
- cve@mitre.org
References
- http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02US Government Resource
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdfVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-654382.pdf
- http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02US Government Resource
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdfVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-654382.pdf
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.