CVE-2019-13542 : Vulnerability Insights and Analysis
Discover the impact of CVE-2019-13542 affecting 3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server versions 3.5.11.0 to 3.5.15.0. Learn about the exploitation, impact, and mitigation steps.
3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server versions 3.5.11.0 to 3.5.15.0 have a vulnerability that can lead to a denial-of-service situation.
Understanding CVE-2019-13542
The vulnerability in the CODESYS V3 OPC UA Server allows an attacker to exploit a NULL pointer dereference, potentially causing a denial-of-service.
What is CVE-2019-13542?
The vulnerability in the CODESYS V3 OPC UA Server versions 3.5.11.0 to 3.5.15.0 enables attackers to send manipulated requests from a trusted OPC UA client, resulting in a NULL pointer dereference.
The Impact of CVE-2019-13542
Exploiting this vulnerability can lead to a denial-of-service situation, affecting the availability of the affected systems.
Technical Details of CVE-2019-13542
The technical details of the vulnerability in the CODESYS V3 OPC UA Server.
Vulnerability Description
- Vulnerability Type: NULL POINTER DEREFERENCE (CWE-476)
- Attack Vector: Remote
- Attack Complexity: Low
- Privileges Required: None
Affected Systems and Versions
- Product: 3S-Smart Software Solutions GmbH CODESYS V3 OPC UA Server
- Vendor: GmbH
- Versions: all versions 3.5.11.0 to 3.5.15.0
Exploitation Mechanism
The attacker can send crafted requests from a trusted OPC UA client, triggering a NULL pointer dereference and potentially causing a denial-of-service condition.
Mitigation and Prevention
Steps to mitigate and prevent the exploitation of CVE-2019-13542.
Immediate Steps to Take
- Update to the latest patched version of the CODESYS V3 OPC UA Server.
- Implement network segmentation to limit access to vulnerable systems.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses.
- Educate users and administrators about secure coding practices and potential threats.
Patching and Updates
- Apply patches provided by 3S-Smart Software Solutions GmbH promptly to address the vulnerability.