PT-2014-1002 · Siemens · Simatic S7-1200 Cpu

Published 2014-03-20 · Updated 2020-02-10 · CVE-2014-2256

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/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 allows remote attackers to cause a denial of service, resulting in a defect-mode transition, via crafted ISO-TSAP packets. Exploitation can be achieved by sending a special TCP/IP packet to port 102, which can cause the device to transition into an emergency mode that lasts until a hardware reset is performed.

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

Improper Resource Release

Weakness Enumeration

CWE-399

CWE-404

Related Identifiers

BDU:2014-00020

CVE-2014-2256

Affected Products

Simatic S7-1200 Cpu

References · 6

• http://siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2014-2256 · Security Note
• https://bdu.fstec.ru/vul/2014-00020 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-654382.pdf · Note
• http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02 · Note
• http://ics-cert.us-cert.gov/advisories/ICSA-14-079-02#footnoterefp_zf487p9 · Note