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 sessions by predicting a value.

Score

CVSS 2.0 8.3 High

Status

Modified - cve@mitre.org

Published

2013-09-17

Last modified

2024-08-06

Weaknesses

CWE-189

Affected products

• Scalance X-200 (Siemens)
• Scalance X-200 Series Firmware (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 (Siemens)

References

• http://ics-cert.us-cert.gov/advisories/ICSA-13-254-01
• http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-850708.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-850708.pdf