Resource exhaustion in Siemens products - CVE-2023-35921
Published: July 13, 2023
Vulnerability identifier: #VU78232
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-2023-35921
CWE-ID: CWE-400
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 application does not properly control consumption of internal resources when processing specially crafted Ethernet frames. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
SIMATIC MV540 H
SIMATIC MV540 S
SIMATIC MV550 H
SIMATIC MV550 S
SIMATIC MV560 U
SIMATIC MV560 X
SIMATIC MV540 S
SIMATIC MV550 H
SIMATIC MV550 S
SIMATIC MV560 U
SIMATIC MV560 X
How to mitigate CVE-2023-35921
Install updates from vendor's website.
SIMATIC MV540 H - update to 3.3.4
SIMATIC MV540 S - update to 3.3.4
SIMATIC MV550 H - update to 3.3.4
SIMATIC MV550 S - update to 3.3.4
SIMATIC MV560 U - update to 3.3.4
SIMATIC MV560 X - update to 3.3.4
SIMATIC MV540 S - update to 3.3.4
SIMATIC MV550 H - update to 3.3.4
SIMATIC MV550 S - update to 3.3.4
SIMATIC MV560 U - update to 3.3.4
SIMATIC MV560 X - update to 3.3.4