CVE-2021-3904 : Exploit Details and Defense Strategies

A detailed overview of CVE-2021-3904 focusing on cross-site scripting vulnerability found in getgrav/grav.

Understanding CVE-2021-3904

This section provides insights into the vulnerability, impact, technical details, and mitigation strategies.

What is CVE-2021-3904?

CVE-2021-3904 refers to a cross-site scripting (XSS) vulnerability identified in getgrav/grav, allowing attackers to execute malicious scripts on web pages.

The Impact of CVE-2021-3904

The vulnerability poses a medium severity risk with a CVSS base score of 6.3, potentially leading to unauthorized script execution and data theft.

Technical Details of CVE-2021-3904

Explore the specific technical aspects of the vulnerability affecting getgrav/grav.

Vulnerability Description

grav is susceptible to improper neutralization of input during web page generation, enabling stored cross-site scripting attacks.

Affected Systems and Versions

The vulnerability impacts all versions of getgrav/grav prior to version 1.7.24, making them vulnerable to XSS exploits.

Exploitation Mechanism

Attackers can leverage this flaw to inject malicious scripts into web pages, leading to unauthorized access and data manipulation.

Mitigation and Prevention

Discover the necessary steps to mitigate the risks associated with CVE-2021-3904.

Immediate Steps to Take

Users are advised to update getgrav/grav to version 1.7.24 or above to eliminate the XSS vulnerability and enhance overall security.

Long-Term Security Practices

Implement secure coding practices and conduct regular security audits to detect and patch vulnerabilities promptly.

Patching and Updates

Stay informed about security updates released by getgrav to address known vulnerabilities and protect your web application from potential threats.