CVE-2020-15798 : Security Advisory and Response
Discover the critical vulnerability in Siemens products, including SIMATIC HMI Comfort Panels and SINAMICS series, allowing unauthorized access. Learn how to mitigate the risk and apply necessary patches.
A vulnerability has been identified in various Siemens products, including SIMATIC HMI Comfort Panels, SINAMICS GH150, GL150, GM150, SH150, SL150, SM120, SM150, and SM150i. The issue allows remote attackers to gain full access to affected devices without authentication.
Understanding CVE-2020-15798
This CVE identifies a critical vulnerability in Siemens products that could lead to unauthorized access.
What is CVE-2020-15798?
The vulnerability affects several Siemens products, enabling unauthorized access to devices with telnet service enabled, without the need for authentication.
The Impact of CVE-2020-15798
The vulnerability could allow remote attackers to exploit affected devices and gain complete control over them, posing a significant security risk.
Technical Details of CVE-2020-15798
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The affected Siemens products do not require authentication for telnet service, potentially granting unauthorized access to attackers.
Affected Systems and Versions
- SIMATIC HMI Comfort Panels (incl. SIPLUS variants) < V16 Update 3a
- SIMATIC HMI KTP Mobile Panels < V16 Update 3a
- SINAMICS GH150, GL150, GM150, SH150, SL150, SM120, SM150, SM150i (All versions)
Exploitation Mechanism
Attackers can exploit the lack of authentication for telnet service on affected devices to gain full control remotely.
Mitigation and Prevention
Protecting systems from this vulnerability is crucial to maintaining security.
Immediate Steps to Take
- Disable telnet service on affected devices if not essential
- Implement network segmentation to restrict access
- Monitor network traffic for any suspicious activity
Long-Term Security Practices
- Regularly update firmware and software to patch vulnerabilities
- Conduct security assessments and audits periodically
- Educate users on best security practices and awareness
Patching and Updates
- Apply the latest updates and patches provided by Siemens to address this vulnerability