CVE-2013-5709
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 2.0
- 8.3 HIGHAV:N/AC:M/Au:N/C:P/I:P/A:C
- EPSS
- 2.99% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- siemens/scalance x-200 series firmware · siemens/scalance x-200 · siemens/scalance x-200rna · siemens/scalance x200-4p irt · siemens/scalance x201-3p irt · siemens/scalance x202-2irt · siemens/scalance x202-2p irt · siemens/scalance x204irt · siemens/scalance xf-200
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.