Input validation error in SIMATIC MV400 - CVE-2020-25241
Published: March 10, 2021
Vulnerability identifier: #VU51379
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-2020-25241
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 the underlying TCP stack of the affected products does not correctly validate the sequence number for incoming TCP RST packages. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
SIMATIC MV400
How to mitigate CVE-2020-25241
Install update from vendor's website.
SIMATIC MV400 - update to 7.0.6