Siemens SIMATIC Drive Controller Service Port 102 memory corruption

Summaryinfo

A vulnerability described as critical has been identified in Siemens SIMATIC Drive Controller, SIMATIC ET 200SP Open Controller CPU 1515SP PC, SIMATIC ET 200SP Open Controller CPU 1515SP PC2, SIMATIC S7-1200 CPU, SIMATIC S7-1500 CPU, SIMATIC S7-1500 Software Controller and SIMATIC S7-PLCSIM Advanced. The impacted element is an unknown function of the component Service Port 102. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2020-15782. The attack can be launched remotely. No exploit exists. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability has been found in Siemens SIMATIC Drive Controller, SIMATIC ET 200SP Open Controller CPU 1515SP PC, SIMATIC ET 200SP Open Controller CPU 1515SP PC2, SIMATIC S7-1200 CPU, SIMATIC S7-1500 CPU, SIMATIC S7-1500 Software Controller and SIMATIC S7-PLCSIM Advanced (SCADA Software) and classified as critical. This vulnerability affects an unknown code block of the component Service Port 102. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.9.2), SIMATIC S7-1500 Software Controller (All versions < V21.9), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), SINAMICS PERFECT HARMONY GH180 Drives (Drives manufactured before 2021-08-13), SINUMERIK MC (All versions < V6.15), SINUMERIK ONE (All versions < V6.15). Affected devices are vulnerable to a memory protection bypass through a specific operation. A remote unauthenticated attacker with network access to port 102/tcp could potentially write arbitrary data and code to protected memory areas or read sensitive data to launch further attacks.

The weakness was disclosed 05/29/2021 as ssa-434534. The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2020-15782. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/03/2026).

Proper firewalling of is able to address this issue.

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Productinfo

Type

• SCADA Software

Vendor

• Siemens

Name

• SIMATIC Drive Controller
• SIMATIC ET 200SP Open Controller CPU 1515SP PC
• SIMATIC ET 200SP Open Controller CPU 1515SP PC2
• SIMATIC S7-1200 CPU
• SIMATIC S7-1500 CPU
• SIMATIC S7-1500 Software Controller
• SIMATIC S7-PLCSIM Advanced

License

• commercial

Website

• Vendor: https://www.siemens.com/

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