CVE-2020-22842 : Vulnerability Insights and Analysis
Learn about CVE-2020-22842, a vulnerability in CMS Made Simple allowing XSS attacks via the m1_mod parameter. Find mitigation steps and preventive measures here.
CMS Made Simple before 2.2.15 allows XSS via the m1_mod parameter in a ModuleManager local_uninstall action to admin/moduleinterface.php.
Understanding CVE-2020-22842
CMS Made Simple is vulnerable to cross-site scripting (XSS) attacks due to improper input validation.
What is CVE-2020-22842?
This CVE refers to a security vulnerability in CMS Made Simple that enables attackers to execute malicious scripts through the m1_mod parameter in a specific action.
The Impact of CVE-2020-22842
The vulnerability allows attackers to inject and execute arbitrary scripts in the context of an admin user, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2020-22842
CMS Made Simple before version 2.2.15 is susceptible to XSS attacks through the m1_mod parameter in a ModuleManager local_uninstall action.
Vulnerability Description
The issue arises from inadequate validation of user-supplied input, enabling attackers to embed malicious scripts that are executed when the affected module is uninstalled.
Affected Systems and Versions
- Product: CMS Made Simple
- Versions affected: Before 2.2.15
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a specially-crafted request containing malicious scripts in the m1_mod parameter, which are then executed when the module is uninstalled.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-22842.
Immediate Steps to Take
- Update CMS Made Simple to version 2.2.15 or later to patch the vulnerability.
- Monitor and restrict user input to prevent malicious script injection.
Long-Term Security Practices
- Regularly update and patch all software to address known vulnerabilities.
- Implement input validation and output encoding to prevent XSS attacks.
- Educate users and administrators about safe coding practices and security best practices.
Patching and Updates
Ensure timely installation of security patches and updates for CMS Made Simple to protect against known vulnerabilities.