PT-2014-1003 · Siemens · Simatic S7-1200 Cpu

Published 2014-03-20 · Updated 2020-02-10 · CVE-2014-2250

Positive Technologies (AI Summary)

CVSS v2.0

8.3

High

Base vector

AV:N/AC:M/Au:N/C:P/I:P/A:C

Name of the Vulnerable Software and Affected Versions Siemens SIMATIC S7-1200 CPU PLC devices with firmware prior to 4.0

Description The issue concerns a problem with the random-number generator in the authentication handler of the web server, which lacks sufficient entropy. This makes it easier for remote attackers to defeat cryptographic protection mechanisms. As a result, attackers can hijack sessions.

Recommendations For Siemens SIMATIC S7-1200 CPU PLC devices with firmware prior to 4.0, update the firmware to version 4.0 or later to resolve the issue.

Fix

Weakness Enumeration

CWE-331

CWE-310

Related Identifiers

BDU:2014-00022

CVE-2014-2250

Affected Products

Simatic S7-1200 Cpu

References · 5

• https://bdu.fstec.ru/vul/2014-00022 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2014-2250 · Security Note
• http://siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdf · Vendor Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-654382.pdf · Note
• http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02 · Note