NULL pointer dereference in Siemens products - CVE-2023-30755

Vulnerability identifier: #VU97430

CSH Severity: Low

CVSS v4: 5.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-30755

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

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

SIMATIC HMI Comfort Panels
SIMATIC IPC DiagBase
SIMATIC IPC DiagMonitor
SIMATIC WinCC Runtime Advanced
SIPLUS TIM 1531 IRC
TIM 1531 IRC
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

Install updates from vendor's website.

SIPLUS TIM 1531 IRC - update to 2.4.8
TIM 1531 IRC - update to 2.4.8
SIMATIC CP 1242-7 V2 - update to 3.5.20
SIMATIC CP 1243-1 - update to 3.5.20
SIMATIC CP 1243-1 DNP3 - update to 3.5.20
SIMATIC CP 1243-1 IEC - update to 3.5.20
SIMATIC CP 1243-7 LTE - update to 3.5.20
SIMATIC CP 1243-8 IRC - update to 3.5.20

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

• Multiple vulnerabilities in Siemens Industrial products