CVE-2020-5948 : Security Advisory and Response
Learn about CVE-2020-5948, a critical reflected XSS vulnerability in BIG-IP versions 11.6.1-16.0.0.1. Find out the impact, affected systems, exploitation details, and mitigation steps.
A vulnerability in BIG-IP versions 11.6.1-16.0.0.1 allows for a reflected XSS attack through undisclosed endpoints in iControl REST, potentially leading to a complete system compromise.
Understanding CVE-2020-5948
This CVE involves a cross-site scripting (XSS) vulnerability in F5's BIG-IP platform.
What is CVE-2020-5948?
CVE-2020-5948 is a security flaw in BIG-IP versions 11.6.1-16.0.0.1 that enables attackers to execute a reflected XSS attack via certain iControl REST endpoints.
The Impact of CVE-2020-5948
Exploitation of this vulnerability could result in a full compromise of the BIG-IP system, especially if the targeted user has admin privileges.
Technical Details of CVE-2020-5948
This section delves into the specifics of the vulnerability.
Vulnerability Description
The vulnerability allows for a reflected XSS attack through undisclosed endpoints in iControl REST on affected BIG-IP versions.
Affected Systems and Versions
- BIG-IP versions 16.0.0-16.0.0.1
- BIG-IP versions 15.1.0-15.1.0.5
- BIG-IP versions 14.1.0-14.1.2.7
- BIG-IP versions 13.1.0-13.1.3.4
- BIG-IP versions 12.1.0-12.1.5.2
- BIG-IP versions 11.6.1-11.6.5.2
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious requests to the affected endpoints, tricking users into executing unintended scripts.
Mitigation and Prevention
Protecting systems from CVE-2020-5948 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Monitor and restrict access to iControl REST endpoints.
- Educate users about the risks of executing scripts from untrusted sources.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Implement web application firewalls to filter and block malicious traffic.
- Conduct security assessments and penetration testing to identify and remediate weaknesses.
Patching and Updates
F5 has released patches to address CVE-2020-5948. Ensure that you apply the latest updates to mitigate the risk of exploitation.