Vulnerabilities > CVE-2018-4850 - Unspecified vulnerability in Siemens Simatic S7-400 Firmware and Simatic S7-400H Firmware
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 3 | |
| Hardware | 2 |
References
- http://www.securityfocus.com/bid/104217
- http://www.securityfocus.com/bid/104217
- https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf
- https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications
- https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications