CVE-2020-15155 : What You Need to Know

baserCMS 4.3.6 and earlier versions are affected by Cross Site Scripting (XSS) vulnerability via arbitrary script execution, requiring admin access for exploitation. The vulnerability is fixed in version 4.3.7.

Understanding CVE-2020-15155

baserCMS is susceptible to a Cross-Site Scripting (XSS) vulnerability that could allow attackers to execute arbitrary scripts.

What is CVE-2020-15155?

The vulnerability in baserCMS allows for Cross-Site Scripting (XSS) attacks, potentially leading to unauthorized script execution.

The Impact of CVE-2020-15155

CVSS Score: 7.3 (High)
Attack Vector: Network
Attack Complexity: High
Privileges Required: High
User Interaction: Required
Confidentiality Impact: High
Integrity Impact: High
Scope: Changed
Vector String: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N

Technical Details of CVE-2020-15155

baserCMS version 4.3.6 and below are affected by this vulnerability.

Vulnerability Description

The vulnerability allows for Cross-Site Scripting (XSS) attacks through the toolbar.php component.

Affected Systems and Versions

Affected Product: basercms
Vendor: baserproject
Affected Versions: < 4.3.7 (unspecified custom version)

Exploitation Mechanism

To exploit this vulnerability, admin access is required to inject and execute arbitrary scripts.

Mitigation and Prevention

Take immediate steps to secure your system and prevent exploitation.

Immediate Steps to Take

Update baserCMS to version 4.3.7 or the latest release.
Restrict admin access and permissions to minimize the risk of unauthorized script execution.

Long-Term Security Practices

Regularly monitor and audit the application for security vulnerabilities.
Educate users on safe browsing practices and potential risks of XSS attacks.
Implement security mechanisms to sanitize user inputs and prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from baserproject.
Apply patches promptly to address known vulnerabilities.