CVE-2021-21494 : Exploit Details and Defense Strategies
Stay informed about CVE-2021-21494, a cross-site scripting (XSS) vulnerability in MK-AUTH up to version 19.01 K4.9. Learn about its impact, affected systems, and mitigation steps.
MK-AUTH through 19.01 K4.9 is vulnerable to a cross-site scripting (XSS) attack via the admin/logs_ajax.php parameter. This allows an attacker to exploit the vulnerability to access the centralmka2 cookie, which lacks the HTTPOnly attribute.
Understanding CVE-2021-21494
This section delves into the details of the CVE-2021-21494 vulnerability.
What is CVE-2021-21494?
CVE-2021-21494 pertains to a specific XSS vulnerability in MK-AUTH through version 19.01 K4.9 that enables attackers to carry out cross-site scripting attacks via the admin/logs_ajax.php 'tipo' parameter.
The Impact of CVE-2021-21494
The impact of this vulnerability is that an unauthorized attacker can exploit it to potentially read the centralmka2 cookie, which does not have the HTTPOnly attribute set, making it susceptible to attacks.
Technical Details of CVE-2021-21494
This section explores the technical aspects of the CVE-2021-21494 vulnerability.
Vulnerability Description
The vulnerability allows for XSS attacks through the specific 'tipo' parameter in the admin/logs_ajax.php file in MK-AUTH versions up to 19.01 K4.9.
Affected Systems and Versions
All versions of MK-AUTH up to 19.01 K4.9 are affected by this XSS vulnerability.
Exploitation Mechanism
Attackers can leverage this vulnerability to execute XSS attacks and potentially access sensitive information such as the centralmka2 session token cookie.
Mitigation and Prevention
In this section, we cover the steps to mitigate and prevent exploitation of CVE-2021-21494.
Immediate Steps to Take
It is recommended to implement input validation mechanisms and sanitize user inputs to prevent XSS attacks. Additionally, ensure that sensitive cookies have the HTTPOnly attribute set.
Long-Term Security Practices
Regular security assessments, code audits, and security training for developers can help in establishing a robust security posture.
Patching and Updates
Ensure that you apply patches and updates provided by MK-AUTH to address the XSS vulnerability in the affected versions.