Siemens has informed customers that some of its products are affected by recently disclosed vulnerabilities affecting the WibuKey digital rights management (DRM) solution from Wibu Systems.
Cisco Talos revealed in December that the WibuKey DRM has three vulnerabilities that can lead to information disclosure, privilege escalation, and remote code execution. Cisco noted at the time that WibuKey is used by many applications, including the V-Ray image rendering software, the ArchiCAD architectural design software, and the Straton industrial automation software.
It turns out that Siemens also uses WibuKey for some of its products, including SICAM 230, a process control and monitoring system designed for the energy sector, and the SIMATIC WinCC Open Architecture (OA) human-machine interface (HMI) product.
Learn More About ICS Flaws at SecurityWeek’s 2019 ICS Cyber Security Conference
The most serious of the WibuKey flaws is CVE-2018-3991, a critical heap overflow that can be exploited by a remote attacker for arbitrary code execution by sending specially crafted TCP packets to the targeted system on port 22347.
Another critical vulnerability is CVE-2018-3990, a pool corruption that can be exploited to escalate privileges by sending specially crafted I/O request packets (IRPs).
The last vulnerability is CVE-2018-3989, which can also be exploited via specially crafted IRP requests. This security hole can allow an attacker to read kernel memory information and it has been assigned a severity rating of “medium.”
Siemens has advised customers to update the WibuKey DRM to version 6.50 or higher, which should patch the vulnerabilities. The German industrial giant also recommends blocking port 22347 via a firewall to prevent exploitation of CVE-2018-3991.
Cisco has published technical information for each of the vulnerabilities, along with proof-of-concept (PoC) exploits, which increases the chances of exploitation.
Related: Siemens Wants to Release Security Advisories on Patch Tuesday
Related: Siemens Warns of Linux, GNU Flaws in Controller Platform
Related: Siemens Patches Several Critical Flaws in SINUMERIK Controllers

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.
More from Eduard Kovacs
- British Retailer JD Sports Discloses Data Breach Affecting 10 Million Customers
- Meta Awards $27,000 Bounty for 2FA Bypass Vulnerability
- Industry Reactions to Hive Ransomware Takedown: Feedback Friday
- US Reiterates $10 Million Reward Offer After Disruption of Hive Ransomware
- Hive Ransomware Operation Shut Down by Law Enforcement
- UK Gov Warns of Phishing Attacks Launched by Iranian, Russian Cyberspies
- Dozens of Cybersecurity Companies Announced Layoffs in Past Year
- Security Update for Chrome 109 Patches 6 Vulnerabilities
Latest News
- Russian Millionaire on Trial in Hack, Insider Trade Scheme
- British Retailer JD Sports Discloses Data Breach Affecting 10 Million Customers
- Vulnerabilities in OpenEMR Healthcare Software Expose Patient Data
- Russia-Linked APT29 Uses New Malware in Embassy Attacks
- Meta Awards $27,000 Bounty for 2FA Bypass Vulnerability
- The Effect of Cybersecurity Layoffs on Cybersecurity Recruitment
- Critical Vulnerability Impacts Over 120 Lexmark Printers
- BIND Updates Patch High-Severity, Remotely Exploitable DoS Flaws
