CVE-2021-23027 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-23027, a DOM based cross-site scripting (XSS) flaw in F5's BIG-IP Configuration utility. Learn about the affected versions and mitigation strategies.
A DOM based cross-site scripting (XSS) vulnerability in BIG-IP Configuration utility versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, and 14.1.x before 14.1.4.3 allows attackers to execute JavaScript as the logged-in user. This CVE was published on September 14, 2021, by F5.
Understanding CVE-2021-23027
This section provides insights into the nature of the vulnerability and its potential impacts.
What is CVE-2021-23027?
The CVE-2021-23027 vulnerability pertains to a DOM based cross-site scripting (XSS) issue found in undisclosed pages of the BIG-IP Configuration utility. It enables malicious actors to run JavaScript within the user's session.
The Impact of CVE-2021-23027
The vulnerability poses a significant risk as it allows attackers to execute arbitrary JavaScript code in the context of the affected user, potentially leading to various security breaches.
Technical Details of CVE-2021-23027
This section dives into the technical aspects of the CVE, including affected systems, versions, and exploitation methods.
Vulnerability Description
The flaw exists in BIG-IP Configuration utility versions 16.0.x before 16.0.1.2, 15.1.x before 15.1.3.1, and 14.1.x before 14.1.4.3, enabling unauthorized JavaScript execution by leveraging a DOM based cross-site scripting vulnerability.
Affected Systems and Versions
Systems running BIG-IP software versions mentioned earlier are susceptible to this XSS vulnerability.
Exploitation Mechanism
Exploiting this vulnerability involves injecting malicious JavaScript code into specific pages of the Configuration utility, allowing unauthorized script execution.
Mitigation and Prevention
To secure systems against CVE-2021-23027, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
Deploying patches released by F5 to address the XSS flaw is essential. Additionally, monitoring systems for any potential exploitation attempts and restricting access to vulnerable pages can help mitigate risks.
Long-Term Security Practices
Implementing regular security updates, conducting security audits, and educating users on safe browsing practices are key to maintaining a robust security posture.
Patching and Updates
Regularly applying security patches and staying informed about the latest security advisories from F5 is vital to prevent exploitation of known vulnerabilities.