CVE-2019-6845 : What You Need to Know
Learn about CVE-2019-6845 affecting Modicon M580, M340, Premium, Quantum devices. Discover the CWE-319 vulnerability leading to information disclosure and mitigation steps.
The Modicon M580, Modicon M340, Modicon Premium, and Modicon Quantum (all firmware versions) are affected by a vulnerability that could lead to the disclosure of sensitive information when using the Modbus TCP protocol.
Understanding CVE-2019-6845
This CVE involves a CWE-319 vulnerability that allows for the cleartext transmission of sensitive information, potentially resulting in information disclosure.
What is CVE-2019-6845?
The vulnerability in Modicon devices enables the transmission of sensitive data in cleartext when transferring applications via the Modbus TCP protocol, leading to potential information exposure.
The Impact of CVE-2019-6845
The vulnerability could result in the disclosure of sensitive information, posing a risk to the confidentiality of data transmitted to the controller.
Technical Details of CVE-2019-6845
The following technical details outline the specifics of the CVE.
Vulnerability Description
The vulnerability (CWE-319) allows for the transmission of sensitive information in cleartext, potentially leading to information disclosure.
Affected Systems and Versions
- Products: Modicon M580, Modicon M340, Modicon Premium, Modicon Quantum (all firmware versions)
Exploitation Mechanism
The vulnerability is exploited when transferring applications to the controller using the Modbus TCP protocol, enabling the disclosure of sensitive information.
Mitigation and Prevention
To address CVE-2019-6845, consider the following mitigation strategies.
Immediate Steps to Take
- Implement network segmentation to restrict access to affected devices
- Monitor network traffic for any suspicious activity
- Apply encryption mechanisms to protect data in transit
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities
- Conduct security assessments and penetration testing to identify and address weaknesses
- Educate users on secure practices and the risks associated with cleartext transmission
Patching and Updates
- Stay informed about security advisories and updates from the vendor
- Apply patches and updates promptly to mitigate the vulnerability