CVE-2020-23209 : Exploit Details and Defense Strategies

A stored cross-site scripting (XSS) vulnerability in phplist 3.5.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the 'List Description' field under the 'Edit A List' module.

Understanding CVE-2020-23209

This CVE entry describes a specific vulnerability in phplist 3.5.3 that can be exploited by attackers to execute malicious scripts.

What is CVE-2020-23209?

The vulnerability in phplist 3.5.3 enables attackers to inject and execute arbitrary web scripts or HTML code through a manipulated payload in the 'List Description' field.

The Impact of CVE-2020-23209

The exploitation of this vulnerability can lead to unauthorized execution of scripts on the affected system, potentially compromising user data and system integrity.

Technical Details of CVE-2020-23209

This section provides more technical insights into the vulnerability.

Vulnerability Description

The stored XSS vulnerability in phplist 3.5.3 allows threat actors to insert malicious scripts or HTML code through the 'List Description' input field.

Affected Systems and Versions

Affected Product: phplist
Affected Version: 3.5.3

Exploitation Mechanism

Attackers can exploit this vulnerability by inputting a specially crafted payload into the 'List Description' field, triggering the execution of malicious scripts.

Mitigation and Prevention

Protecting systems from CVE-2020-23209 requires immediate actions and long-term security measures.

Immediate Steps to Take

Disable or restrict access to the 'List Description' field until a patch is applied.
Regularly monitor and sanitize user inputs to prevent script injections.

Long-Term Security Practices

Implement input validation and output encoding to mitigate XSS vulnerabilities.
Educate users on safe data handling practices to prevent successful exploitation.

Patching and Updates

Apply the latest security patches and updates provided by phplist to address and remediate the vulnerability.