#VU97431 NULL pointer dereference in Siemens products - CVE-2023-30756

Vulnerability identifier: #VU97431

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2023-30756

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
SIMATIC HMI Comfort Panels
SIMATIC IPC DiagBase
SIMATIC IPC DiagMonitor
SIMATIC WinCC Runtime Advanced
SIMATIC CP 1242-7 V2
SIMATIC CP 1243-1
SIMATIC CP 1243-1 DNP3
SIMATIC CP 1243-1 IEC
SIMATIC CP 1243-7 LTE
SIMATIC CP 1243-8 IRC
SIPLUS TIM 1531 IRC
TIM 1531 IRC

Software vendor:
Siemens

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

The vulnerability exists due to a NULL pointer dereference error in the web server. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/html/ssa-423808.html