Overview This advisory provides mitigation details for a vulnerability that impacts the Siemens Automation License Manager (ALM). Siemens ProductCERT has identified an uncontrolled resource consumption vulnerability in the Siemens ALM, which is used for license management by various Siemens software products. Siemens has produced a software update that fully resolves this vulnerability. Exploitation of this vulnerability would allow loss of availability of the system.

Free download step 7 automation license manager Files at Software Informer. Enterprise Architect's Corporate and extended suite editions, as well as add-in products developed by Sparx Systems, can be purchased as floating licenses. 'Start > SIMATIC > License Management > Automation License Manager' and mark the drive (e.g. 'C') on which your licenses are installed. Displayed in the right window of the Automation License Manager is the table of the licenses installed. For viewing the licenses you need the file name (License Key) and the 20-digit license number.

Affected Products All Siemens software products that include ALM version between 4.0 and 5.2 are affected. The following Siemens product families are affected: • SIMATIC (e.g., STEP 7) • SIMATIC HMI (e.g., WinCC, WinCC flexible) • SIMATIC PCS 7 • SIMOTION (e.g., Scout) • SIMATIC NET • SINAMICS (e.g., Starter) • SIMOCODE. Impact Attackers could exploit the vulnerability to cause memory leakage within the software. This exploit could eventually lead to a crash of the application.

The DoS of the ALM could lead to a DoS of associated devices that use the ALM to verify active licenses. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. Background Siemens is a multinational company headquartered in Munich, Germany. Siemens develops products mainly in the energy, transportation, and healthcare sectors.

ALM centrally manages licenses for various Siemens software products. The products contact ALM either locally or remotely to verify their license using a proprietary protocol. To enable this license verification, ALM listens on Port 4410/TCP by default. These products are deployed across several sectors including energy, healthcare, and others worldwide. Vulnerability Characterization Vulnerability Overview Uncontrolled Resource Consumption An attacker can send maliciously crafted packets to Port 4410/TCP, which will cause a memory leakage and uncontrolled resource consumption, leading to a DoS. Has been assigned to this vulnerability. A CVSS v2 base score of 7.8 has been assigned; the CVSS vector string is.

Vulnerability Details Exploitability This vulnerability could be exploited remotely. Existence of Exploit No known public exploits specifically target this vulnerability. Difficulty An attacker with a low skill would be able to exploit this vulnerability. Mitigation Siemens has provided an that resolves this vulnerability. The update can be applied to all versions of ALM starting with version 4.0.

Siemens recommends that asset owners and operators can contact Siemens to acquire the update. Siemens recommends blocking traffic to Port 4410/TCP from external and remote connections. ICS-CERT encourages asset owners to take additional defensive measures to protect against this and other cybersecurity risks. • Minimize network exposure for all control system devices.

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Critical devices should not directly face the Internet. • Locate control system networks and remote devices behind firewalls, and isolate them from the business network. • When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPN is only as secure as the connected devices. ICS-CERT also provides a section for control systems security recommended practices on the US-CERT Web page. Several recommended practices are available for reading and download, including. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to taking defensive measures. Additional mitigation guidance and recommended practices are publicly available in the ICS-CERT Technical Information Paper,.