CVE-2021-33557 : Vulnerability Insights and Analysis
Learn about CVE-2021-33557, an XSS vulnerability in MantisBT before 2.25.2 allowing attackers to inject code into hidden input fields. Find out the impact, affected versions, and mitigation steps.
An XSS vulnerability was identified in manage_custom_field_edit_page.php in MantisBT before version 2.25.2, allowing attackers to inject malicious code into a hidden input field.
Understanding CVE-2021-33557
This CVE record highlights a cross-site scripting (XSS) weakness in MantisBT that can be exploited by threat actors to execute harmful code.
What is CVE-2021-33557?
The CVE-2021-33557 vulnerability involves unescaped output of the return parameter in manage_custom_field_edit_page.php in MantisBT, providing an avenue for attackers to insert code into a concealed input field.
The Impact of CVE-2021-33557
The security flaw in MantisBT's handling of custom field editing pages opens the door for malicious actors to compromise the integrity of the application and potentially execute unauthorized commands.
Technical Details of CVE-2021-33557
This section elucidates the specifics of the CVE's technical aspects.
Vulnerability Description
The vulnerability arises from inadequate handling of user input in the return parameter of the affected PHP file, enabling malicious code injection.
Affected Systems and Versions
MantisBT versions prior to 2.25.2 are susceptible to this XSS vulnerability in the custom field editing functionality.
Exploitation Mechanism
Exploiting CVE-2021-33557 involves crafting and injecting malicious scripts via the return parameter, leveraging the lack of proper input sanitization.
Mitigation and Prevention
To protect systems from potential exploits related to CVE-2021-33557, immediate action and long-term security practices are crucial.
Immediate Steps to Take
Users are advised to update MantisBT to version 2.25.2 or newer to mitigate the XSS vulnerability and enhance application security.
Long-Term Security Practices
Implement input validation and output encoding practices throughout the application to prevent cross-site scripting attacks and improve overall security posture.
Patching and Updates
Regularly monitor for security advisories and apply patches promptly to address known vulnerabilities and ensure the safety of your MantisBT deployment.