Input validation error in Siemens products - CVE-2019-6575
Published: October 21, 2019
Vulnerability identifier: #VU21971
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2019-6575
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the OPC UA server. A remote attacker can send a specially crafted packet on port 4840/tcp and cause a denial of service condition on the OPC communication or crash the target device.
This vulnerability affects the following products:
- SIMATIC CP443-1 OPC UA
- SIMATIC ET 200 Open Controller CPU 1515SPPC2
- SIMATIC HMI Comfort Outdoor Panels 7" & 15"
- SIMATIC HMI Comfort Panels 4" - 22":All versions
- SIMATIC HMI KTP Mobile Panels KTP400F,KTP700, KTP700F, KTP900 and KTP900F
- SIMATIC IPC DiagMonitor
- SIMATIC NET PC Software
- SIMATIC RF188C
- SIMATIC RF600R
- SIMATIC S7-1500 CPU family
Affected software
SIMATIC RF600R
SIMATIC CP443-1 OPC UA
SIMATIC ET 200SP Open Controller
SIMATIC HMI Comfort Outdoor Panels 7” & 15”
SIMATIC HMI Comfort Panels 4”-22”
SIMATIC HMI KTP Mobile Panels
SIMATIC IPC DiagMonitor
SIMATIC NET PC Software
SIMATIC RF188C
SIMATIC S7-1500 CPU
SIMATIC CP443-1 OPC UA
SIMATIC ET 200SP Open Controller
SIMATIC HMI Comfort Outdoor Panels 7” & 15”
SIMATIC HMI Comfort Panels 4”-22”
SIMATIC HMI KTP Mobile Panels
SIMATIC IPC DiagMonitor
SIMATIC NET PC Software
SIMATIC RF188C
SIMATIC S7-1500 CPU
How to mitigate CVE-2019-6575
Install updates from vendor's website.
SIMATIC RF600R - update to 3.2.1
SIMATIC ET 200SP Open Controller - update to 2.7
SIMATIC RF188C - update to 1.1.0
SIMATIC S7-1500 CPU - update to 2.6.1
SIMATIC ET 200SP Open Controller - update to 2.7
SIMATIC RF188C - update to 1.1.0
SIMATIC S7-1500 CPU - update to 2.6.1