Resource exhaustion in Siemens products - CVE-2024-43647

Vulnerability identifier: #VU97146

CSH Severity: Medium

CVSS v4.0: 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-2024-43647

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Siemens

Affected software:
SIMATIC S7-200 SMART CPU CR40
SIMATIC S7-200 SMART CPU CR60
SIMATIC S7-200 SMART CPU SR20
SIMATIC S7-200 SMART CPU SR30
SIMATIC S7-200 SMART CPU SR40
SIMATIC S7-200 SMART CPU SR60
SIMATIC S7-200 SMART CPU ST20
SIMATIC S7-200 SMART CPU ST30
SIMATIC S7-200 SMART CPU ST40
SIMATIC S7-200 SMART CPU ST60

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 within handling of TCP packets. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/html/ssa-969738.html