CVE-2021-41464 : Exploit Details and Defense Strategies

This CVE-2021-41464 article provides details about a Cross-site scripting (XSS) vulnerability in concrete5-legacy 5.6.4.0 and below that allows remote attackers to inject arbitrary web script or HTML.

Understanding CVE-2021-41464

This section covers the impact and technical details of the CVE-2021-41464 vulnerability.

What is CVE-2021-41464?

This CVE identifies a Cross-site scripting (XSS) vulnerability in concrete5-legacy versions 5.6.4.0 and below. Attackers can inject malicious web scripts or HTML through the 'rel' parameter.

The Impact of CVE-2021-41464

This vulnerability enables remote attackers to execute arbitrary script code on the affected website, potentially leading to various security risks such as data theft, defacement, or unauthorized access.

Technical Details of CVE-2021-41464

This section delves into the technical aspects of the CVE including the vulnerability description, affected systems, versions, and exploitation mechanisms.

Vulnerability Description

The vulnerability resides in concrete/elements/collection_add.php in concrete5-legacy 5.6.4.0 and earlier. It allows malicious actors to insert unauthorized web script or HTML via the 'rel' parameter.

Affected Systems and Versions

Product: concrete5-legacy
Vendor: N/A
Versions affected: 5.6.4.0 and below

Exploitation Mechanism

The vulnerability can be exploited by remote attackers injecting malicious code via the 'rel' parameter, leading to potential XSS attacks.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-41464.

Immediate Steps to Take

Update concrete5-legacy to the latest version.
Implement input validation to sanitize user inputs.

Long-Term Security Practices

Regularly check for security updates and patches.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Apply security patches promptly to prevent exploitation of known vulnerabilities.