CVE-2013-5709
highpriority · track · 34EPSS 0.030 · 87 %ileEUUSEPSS · scored 2026-10-27
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.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
No vendor fix yet; a mitigation is available.
- MitigationSCALANCE X-200 switch Machine-Readable Product Designation (MLFB)cisa_csaf_ot
Siemens has produced a new version of SCALANCE X-200 firmware, V5.0.0. This new version fixes the Web hijack vulnerability. Users may obtain a copy of V5.0.0 at the following location on the Siemens Web site: (http://support.automation.siemens.com/WW/view/de/78458674)
http://support.automation.siemens.com/WW/view/de/78458674 - MitigationSCALANCE X-200 switch family firmwarecisa_csaf_ot
Siemens has produced a new version of SCALANCE X-200 firmware, V5.0.0. This new version fixes the Web hijack vulnerability. Users may obtain a copy of V5.0.0 at the following location on the Siemens Web site: (http://support.automation.siemens.com/WW/view/de/78458674)
http://support.automation.siemens.com/WW/view/de/78458674
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (29)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-13-254-01Siemens SCALANCE X-200 Web Hijack Vulnerability2013-06-14icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01cnnvd
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdfcnnvd
- http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdfPatchcnnvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdfcnnvd
- http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01enisa_euvd
- http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdfenisa_euvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdfenisa_euvd
- http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01US Government Resourcenvd
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