#VU84387 Uncontrolled Recursion in Siemens products - CVE-2022-47374

Vulnerability identifier: #VU84387

Vulnerability risk: Medium

CVSSv4.0: 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:U/U:Green

CVE-ID: CVE-2022-47374

CWE-ID: CWE-674

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
SIMATIC S7-400 CPU 412-2 PN V7
SIMATIC S7-400 CPU 414-3 PN/DP V7
SIMATIC S7-400 CPU 414F-3 PN/DP V7
SIMATIC S7-400 CPU 416-3 PN/DP V7
SIMATIC S7-400 CPU 416F-3 PN/DP V7
SIMATIC PC-Station Plus
SIPLUS S7-400 CPU 414-3 PN/DP V7
SIPLUS S7-400 CPU 416-3 PN/DP V7
SINAMICS S120

Software vendor:
Siemens

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled recursion. A remote attacker can pass specially crafted input to the application and cause a denial of service condition on the target system.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/pdf/ssa-892915.pdf