CVE-2020-23208 : Security Advisory and Response

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 'Send test' field under the 'Start or continue campaign' module.

Understanding CVE-2020-23208

This CVE involves a stored XSS vulnerability in phplist 3.5.3, enabling malicious actors to run unauthorized web scripts or HTML code.

What is CVE-2020-23208?

This CVE refers to a specific security flaw in phplist 3.5.3 that permits attackers to execute malicious scripts or HTML content through a manipulated payload in the 'Send test' field within the 'Start or continue campaign' module.

The Impact of CVE-2020-23208

The vulnerability can lead to various consequences, including unauthorized script execution, HTML injection, and potential data theft or manipulation.

Technical Details of CVE-2020-23208

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows threat actors to inject and execute malicious web scripts or HTML code through a specially crafted payload in the 'Send test' field of the 'Start or continue campaign' module in phplist 3.5.3.

Affected Systems and Versions

Affected Product: phplist
Affected Version: 3.5.3

Exploitation Mechanism

Attackers can exploit this vulnerability by inputting a malicious payload into the 'Send test' field, taking advantage of the lack of proper input validation in the affected module.

Mitigation and Prevention

Protecting systems from CVE-2020-23208 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable the 'Send test' feature temporarily if possible to prevent exploitation.
Implement input validation mechanisms to sanitize user inputs and prevent XSS attacks.
Monitor and filter user inputs for suspicious content.

Long-Term Security Practices

Regularly update phplist to the latest version to patch known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential security weaknesses.

Patching and Updates

Ensure timely installation of security patches and updates released by phplist to address the XSS vulnerability and enhance overall system security.