CVE-2020-5912 : Vulnerability Insights and Analysis

In BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.3, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the restjavad process's dump command does not follow current best coding practices and may overwrite arbitrary files.

Understanding CVE-2020-5912

This CVE affects BIG-IP devices and can lead to a Denial of Service (DoS) due to improper coding practices.

What is CVE-2020-5912?

CVE-2020-5912 is a vulnerability in the restjavad process's dump command in various versions of BIG-IP devices, potentially allowing attackers to overwrite arbitrary files.

The Impact of CVE-2020-5912

The vulnerability can be exploited to cause a DoS condition on affected systems, disrupting services and potentially leading to system unavailability.

Technical Details of CVE-2020-5912

This section provides more technical insights into the vulnerability.

Vulnerability Description

The restjavad process's dump command in BIG-IP versions mentioned lacks proper coding practices, enabling the overwriting of arbitrary files.

Affected Systems and Versions

BIG-IP versions 15.1.0-15.1.0.4
BIG-IP versions 15.0.0-15.0.1.3
BIG-IP versions 14.1.0-14.1.2.3
BIG-IP versions 13.1.0-13.1.3.3
BIG-IP versions 12.1.0-12.1.5.1
BIG-IP versions 11.6.1-11.6.5.1

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the dump command in the restjavad process to overwrite files, potentially causing a DoS condition.

Mitigation and Prevention

Protecting systems from CVE-2020-5912 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches or updates to mitigate the vulnerability.
Monitor system logs for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

F5 has provided patches to address this vulnerability. Ensure timely application of these patches to secure affected systems.