CVE-2023-48364: openpcs 7 Null Dereference — Fix

Description

A vulnerability has been identified in OpenPCS 7 V9.1 (All versions < V9.1 SP2 UC05), SIMATIC BATCH V9.1 (All versions < V9.1 SP2 UC05), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC05), SIMATIC Route Control V9.1 (All versions < V9.1 SP2 UC05), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 2), SIMATIC WinCC V7.4 (All versions), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 15), SIMATIC WinCC V8.0 (All versions < V8.0 Update 4). The implementation of the RPC (Remote Procedure call) communication protocol in the affected products do not properly handle certain malformed RPC messages. An attacker could use this vulnerability to cause a denial of service condition in the RPC server.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
siemens	openpcs_7	< 9.1
siemens	simatic_batch	< 9.1
siemens	simatic_pcs_7	< 9.1
siemens	simatic_route_control	< 9.1
siemens	simatic_wincc	All
siemens	simatic_wincc	All
siemens	simatic_wincc	All
siemens	simatic_wincc_runtime_professional	< 18
siemens	simatic_wincc_runtime_professional	All

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2023-48364? +

A vulnerability has been identified in OpenPCS 7 V9.1 (All versions < V9.1 SP2 UC05), SIMATIC BATCH V9.1 (All versions < V9.1 SP2 UC05), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC05), SIMATIC Route Control V9.1 (All versions < V9.1 SP2 UC05), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 2), SIMATIC WinCC V7.4 (All versions), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 15), SIMATIC WinCC V8.0 (All versions < V8.0 Update 4). The implementation of the RPC (Remote Procedure call) communication protocol in the affected products do not properly handle certain malformed RPC messages. An attacker could use this vulnerability to cause a denial of service condition in the RPC server. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-48364? +

CVE-2023-48364 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-48364? +

CVE-2023-48364 affects products from siemens, specifically: openpcs_7, simatic_batch, simatic_pcs_7, simatic_route_control, simatic_wincc, simatic_wincc_runtime_professional. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-48364? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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