CVE-2020-13827 : Vulnerability Insights and Analysis

phpList before 3.5.4 allows XSS via /lists/admin/user.php and /lists/admin/users.php.

Understanding CVE-2020-13827

phpList before version 3.5.4 is vulnerable to cross-site scripting (XSS) attacks through specific URLs.

What is CVE-2020-13827?

CVE-2020-13827 is a vulnerability in phpList versions prior to 3.5.4 that enables attackers to execute XSS attacks via /lists/admin/user.php and /lists/admin/users.php.

The Impact of CVE-2020-13827

This vulnerability allows malicious actors to inject and execute arbitrary scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-13827

phpList before version 3.5.4 is susceptible to XSS attacks through specific URLs.

Vulnerability Description

The vulnerability in phpList allows attackers to perform XSS attacks by exploiting the /lists/admin/user.php and /lists/admin/users.php endpoints.

Affected Systems and Versions

Product: phpList
Vendor: Not applicable
Versions affected: All versions before 3.5.4

Exploitation Mechanism

Attackers can craft malicious scripts and inject them into the vulnerable URLs (/lists/admin/user.php and /lists/admin/users.php) to execute unauthorized code in the user's browser.

Mitigation and Prevention

To address CVE-2020-13827, users and administrators should take immediate and long-term security measures.

Immediate Steps to Take

Upgrade phpList to version 3.5.4 or later to mitigate the XSS vulnerability.
Regularly monitor for any suspicious activities on the affected URLs.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Educate users about the risks of clicking on untrusted links or visiting suspicious websites.

Patching and Updates

Stay informed about security updates and patches released by phpList.