#VU86606 NULL pointer dereference in Siemens products - CVE-2023-48363

Vulnerability identifier: #VU86606

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-48363

CWE-ID: CWE-476

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
OpenPCS 7
Server applications / SCADA systems
SIMATIC BATCH
Server applications / SCADA systems
SIMATIC Route Control
Server applications / SCADA systems
SIMATIC WinCC Runtime Professional
Server applications / SCADA systems
Siemens SIMATIC WinCC
Server applications / SCADA systems
SIMATIC PCS 7
Server applications / SCADA systems

Vendor: Siemens

Description

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 implementation of the RPC (Remote Procedure call) communication protocol. A remote attacker on the local network can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenPCS 7: 9.1

SIMATIC BATCH: 9.1

SIMATIC Route Control: 9.1

SIMATIC WinCC Runtime Professional: 18.0 - 19.0

Siemens SIMATIC WinCC: 7.4 - 8.0

SIMATIC PCS 7: 9.1

---

External links
https://cert-portal.siemens.com/productcert/html/ssa-753746.html

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.