SB2018071605 - Denial of service in Siemens EN100 modules and Siprotec 5
Published: July 16, 2018
Security Bulletin ID
SB2018071605
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2018-11451)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to an error when handling malicious input. A remote attacker can activate the IEC 61850-MMS communication, supply specially crafted packets to port 102/tcp and cause the service to crash.
2) Improper input validation (CVE-ID: CVE-2018-11452)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to an error when handling malicious input. A remote attacker can activate the IEC 61850-MMS communication, supply specially crafted packets to port 102/tcp and cause the service to crash if oscillographs are running.
Remediation
Install update from vendor's website.