CVE-2017-11506 Explained : Impact and Mitigation
Learn about CVE-2017-11506, a vulnerability in Nessus versions prior to 6.11 that could lead to man-in-the-middle attacks. Find out how to mitigate risks and secure your systems.
Nessus 6.x versions prior to 6.11 have a vulnerability that could lead to unauthorized interception of data through man-in-the-middle attacks.
Understanding CVE-2017-11506
Nessus 6.x versions prior to 6.11 do not properly verify TLS certificates, posing a risk of man-in-the-middle attacks.
What is CVE-2017-11506?
This CVE refers to a vulnerability in Nessus versions before 6.11, where TLS certificate verification is inadequate, potentially allowing unauthorized interception of data.
The Impact of CVE-2017-11506
The vulnerability could be exploited by attackers to intercept sensitive data through man-in-the-middle attacks, compromising the confidentiality and integrity of communications.
Technical Details of CVE-2017-11506
Nessus 6.x versions before 6.11 have the following technical details:
Vulnerability Description
- Lack of proper TLS certificate verification during initial outgoing connections
Affected Systems and Versions
- Product: Nessus
- Vendor: Tenable
- Vulnerable Versions: 6.x before 6.11
Exploitation Mechanism
- Attackers can exploit the vulnerability to intercept data by performing man-in-the-middle attacks
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2017-11506.
Immediate Steps to Take
- Update Nessus to version 6.11 or later to address the vulnerability
- Monitor network traffic for any signs of unauthorized interception
Long-Term Security Practices
- Implement strong encryption protocols and certificate validation mechanisms
- Regularly update and patch security software to prevent similar vulnerabilities
- Educate users and IT staff on the risks of man-in-the-middle attacks
- Conduct security audits and assessments periodically to identify and address vulnerabilities
- Employ network segmentation and access controls to limit the impact of potential attacks
Patching and Updates
- Apply patches and updates provided by Tenable to ensure the security of Nessus installations