SB2018032201 - Denial of service in Siemens SIMATIC, SINUMERIK, and PROFINET IO
Published: March 22, 2018
Security Bulletin ID
SB2018032201
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper input validation (CVE-ID: CVE-2018-4843)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input. An attacker that is located on the same Ethernet segment (OSI Layer 2) as the targeted device can respond to a PROFINET DCP request with a specially crafted PROFINET DCP packet and cause denial of service.
Remediation
Install update from vendor's website.