CVE-2020-5871 Explained : Impact and Mitigation

This CVE-2020-5871 article provides insights into a denial of service vulnerability affecting BIG-IP versions 14.1.0-14.1.2.3.

Understanding CVE-2020-5871

This section delves into the details of the vulnerability and its impact.

What is CVE-2020-5871?

CVE-2020-5871 is a vulnerability on BIG-IP versions 14.1.0-14.1.2.3 that can result in a denial of service (DoS) when specific requests are sent to BIG-IP HTTP/2 virtual servers. The issue arises from the use of blacklisted ciphers on backend servers, posing a data-plane problem with no control-plane exposure.

The Impact of CVE-2020-5871

The vulnerability can lead to a DoS condition, potentially disrupting the availability of affected systems and services.

Technical Details of CVE-2020-5871

Explore the technical aspects of the CVE-2020-5871 vulnerability.

Vulnerability Description

Undisclosed requests on BIG-IP 14.1.0-14.1.2.3 can trigger a DoS scenario when directed at BIG-IP HTTP/2 virtual servers due to the use of prohibited ciphers on backend servers.

Affected Systems and Versions

Product: BIG-IP
Versions: 14.1.0-14.1.2.3

Exploitation Mechanism

The vulnerability is exploited by sending specific requests to BIG-IP HTTP/2 virtual servers, leveraging blacklisted ciphers on backend servers.

Mitigation and Prevention

Learn how to address and prevent the CVE-2020-5871 vulnerability.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Implement network segmentation to limit exposure.
Monitor network traffic for suspicious activities.

Long-Term Security Practices

Regularly update and patch systems to mitigate known vulnerabilities.
Conduct security assessments and penetration testing to identify weaknesses.
Stay informed about security best practices and industry developments.

Patching and Updates

Ensure timely installation of patches and updates provided by the vendor to address the CVE-2020-5871 vulnerability.