CVE Vulnerability

CVE-2018-4850

A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2), SIMATIC S7-400H CPU hardware version 4.5 and below (All versions). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf Vendor Advisory
http://www.securityfocus.com/bid/104217 Third Party Advisory VDB Entry
Configurations

Configuration 1
Information

Published : 2018-05-16 05:29

Updated : 2019-10-09 11:41

NVD link : CVE-2018-4850

Mitre link : CVE-2018-4850

Products Affected
No products.
CWE
NVD-CWE-noinfo