CVE-2021-32644 : Exploit Details and Defense Strategies

Ampache is an open-source web-based audio/video streaming application and file manager. This vulnerability in versions >= 4.0.0 and < 4.4.3 allows code injection in random.php, potentially impacting user data.

Understanding CVE-2021-32644

This CVE involves an improper neutralization of input during web page generation, leading to cross-site scripting (XSS) attacks. The vulnerability allows malicious actors to inject and execute scripts in the context of an affected site.

What is CVE-2021-32644?

Ampache's version 4.x.y is prone to a code injection flaw in random.php due to insufficient input filtering. Successful exploitation may result in unauthorized access to user data or perform actions on behalf of the user.

The Impact of CVE-2021-32644

The vulnerability poses a medium severity threat with a CVSS base score of 6.4. An attacker can exploit this issue to execute arbitrary code and perform various malicious activities, compromising the confidentiality and integrity of user information.

Technical Details of CVE-2021-32644

This section outlines the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The flaw in random.php allows attackers to insert and execute arbitrary code within the application context, potentially leading to unauthorized access and data manipulation.

Affected Systems and Versions

Versions of Ampache ranging from 4.0.0 to < 4.4.3 are impacted by this vulnerability. Users are advised to upgrade to version 4.4.3 to mitigate the risk.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious code through the random.php page. User authentication is required unless the site is in demo mode, making it easier for adversaries to leverage the issue.

Mitigation and Prevention

Protecting systems from CVE-2021-32644 involves immediate steps to take and adopting long-term security practices.

Immediate Steps to Take

Users should update their Ampache installations to version 4.4.3 or the latest available release to eliminate the vulnerability and enhance system security.

Long-Term Security Practices

Enforcing input validation and output encoding practices, implementing security headers, and conducting regular security audits help prevent similar XSS vulnerabilities.

Patching and Updates

Regularly check for security advisories and updates from Ampache to stay informed about potential vulnerabilities and apply patches promptly.