CVE-2021-39428 : Security Advisory and Response

This CVE-2021-39428 article provides insights into a Cross Site Scripting (XSS) vulnerability in Users.php in eyoucms 1.5.4, allowing remote attackers to run arbitrary code and gain escalated privilege via the filename for edit_users_head_pic.

Understanding CVE-2021-39428

CVE-2021-39428 pertains to a Cross Site Scripting (XSS) vulnerability in eyoucms 1.5.4.

What is CVE-2021-39428?

CVE-2021-39428 is a security vulnerability in Users.php in eyoucms 1.5.4 that enables remote attackers to execute arbitrary code and elevate privileges by manipulating the filename for edit_users_head_pic.

The Impact of CVE-2021-39428

This vulnerability can lead to unauthorized code execution and privilege escalation by malicious actors, posing risks to the confidentiality, integrity, and availability of the system.

Technical Details of CVE-2021-39428

This section covers specific technical aspects of CVE-2021-39428.

Vulnerability Description

The vulnerability allows remote attackers to perform Cross Site Scripting (XSS) attacks by exploiting the Users.php file in eyoucms 1.5.4.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: n/a (All versions affected)

Exploitation Mechanism

The exploit occurs when attackers manipulate the filename for edit_users_head_pic, enabling them to inject and execute malicious code.

Mitigation and Prevention

Here are some practical steps to mitigate and prevent exploitation of CVE-2021-39428.

Immediate Steps to Take

Implement input validation mechanisms to prevent XSS attacks.
Regularly monitor and update security patches for eyoucms.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on safe browsing practices and recognizing phishing attempts.

Patching and Updates

Apply the latest patches and updates provided by the eyoucms platform to address the vulnerability promptly.