CVE-2020-23217 : Vulnerability Insights and Analysis

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 'Add a list' field under the 'Import Emails' module.

Understanding CVE-2020-23217

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

What is CVE-2020-23217?

CVE-2020-23217 is a stored cross-site scripting (XSS) vulnerability found in phplist 3.5.3, enabling threat actors to run arbitrary web scripts or HTML by inserting a specially crafted payload into the 'Add a list' field within the 'Import Emails' module.

The Impact of CVE-2020-23217

This vulnerability can lead to various security risks, including unauthorized access, data theft, and potential compromise of the affected system's integrity.

Technical Details of CVE-2020-23217

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

Vulnerability Description

The vulnerability allows attackers to inject malicious scripts or HTML code into the application, posing a risk of executing unauthorized actions on the system.

Affected Systems and Versions

Product: phplist
Version: 3.5.3

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting a specifically crafted payload into the 'Add a list' field under the 'Import Emails' module, triggering the execution of malicious scripts.

Mitigation and Prevention

Protecting systems from CVE-2020-23217 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update phplist to version 3.5.4 or later to mitigate the vulnerability.
Avoid inputting untrusted data into the 'Add a list' field.

Long-Term Security Practices

Regularly monitor and audit input fields for suspicious activities.
Educate users on safe data handling practices to prevent XSS attacks.

Patching and Updates

Ensure timely installation of security patches and updates to address known vulnerabilities in phplist.