Buffer overflow in Siemens products - CVE-2020-36475
Published: September 16, 2021
Vulnerability identifier: #VU56655
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-2020-36475
CWE-ID: CWE-119
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 a boundary error when generating Diffie-Hellman key pairs. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.
Affected software
SIMATIC RTU 3000
LOGO! CMR2020
LOGO! CMR2040
LOGO! CMR2020
LOGO! CMR2040
How to mitigate CVE-2020-36475
Install updates from vendor's website.
LOGO! CMR2020 - update to 2.2
LOGO! CMR2040 - update to 2.2
LOGO! CMR2040 - update to 2.2