Siemens SIMATIC/SINAMICS IRT resource consumption

Summaryinfo

A vulnerability identified as problematic has been detected in Siemens SIMATIC and SINAMICS. This affects an unknown function of the component IRT. The manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2019-10923. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Siemens SIMATIC and SINAMICS (SCADA Software) (affected version not known). This issue affects some unknown functionality of the component IRT. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

A vulnerability has been identified in CP1604 (All versions < V2.8), CP1616 (All versions < V2.8), Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller (All versions < V4.1.1 Patch 05), Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200 (All versions < V4.5.0 Patch 01), Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P (All versions < V4.5.0), SCALANCE X-200IRT (All versions < V5.2.1), SIMATIC ET 200M (All versions), SIMATIC ET 200S (All versions), SIMATIC ET 200ecoPN (except 6ES7148-6JD00-0AB0 and 6ES7146-6FF00-0AB0) (All versions), SIMATIC ET 200pro (All versions), SIMATIC PN/PN Coupler 6ES7158-3AD01-0XA0 (All versions), SIMATIC S7-300 CPU family (incl. F) (All versions), SIMATIC S7-400 (incl. F) V6 and below (All versions), SIMATIC S7-400 PN/DP V7 (incl. F) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions < SIMATIC WinAC RTX 2010 SP3), SIMOTION (All versions), SINAMICS DCM (All versions < V1.5 HF1), SINAMICS DCP (All versions), SINAMICS G110M V4.7 (Control Unit) (All versions < V4.7 SP10 HF5), SINAMICS G120 V4.7 (Control Unit) (All versions < V4.7 SP10 HF5), SINAMICS G130 V4.7 (Control Unit) (All versions < V4.7 HF29), SINAMICS G150 (Control Unit) (All versions < V4.8), SINAMICS GH150 V4.7 (Control Unit) (All versions), SINAMICS GL150 V4.7 (Control Unit) (All versions), SINAMICS GM150 V4.7 (Control Unit) (All versions), SINAMICS S110 (Control Unit) (All versions), SINAMICS S120 V4.7 (Control Unit and CBE20) (All versions < V4.7 HF34), SINAMICS S150 (Control Unit) (All versions < V4.8), SINAMICS SL150 V4.7 (Control Unit) (All versions), SINAMICS SM120 V4.7 (Control Unit) (All versions), SINUMERIK 828D (All versions < V4.8 SP5), SINUMERIK 840D sl (All versions). An attacker with network access to an affected product may cause a Denial-of-Service condition by breaking the real-time synchronization (IRT) of the affected installation. The security vulnerability could be exploited by an unauthenticated attacker with network access to the affected installation. No user interaction is required to exploit this security vulnerability. The vulnerability impacts the availability of the affected installations.

The weakness was disclosed 10/10/2019 (Website). It is possible to read the advisory at cert-portal.siemens.com. The identification of this vulnerability is CVE-2019-10923 since 04/08/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

The entry VDB-143328 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• SCADA Software

Vendor

• Siemens

Name

• SIMATIC
• SINAMICS

License

• commercial

Website

• Vendor: https://www.siemens.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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