CVE-2018-14840 : What You Need to Know
Learn about CVE-2018-14840 affecting Subrion CMS 4.2.1. Understand the XSS vulnerability due to .htaccess file allowing .html uploads, its impact, and mitigation steps.
Subrion CMS 4.2.1 is vulnerable to XSS attacks due to the presence of the .htaccess file that allows the uploading of .html files, potentially leading to security risks.
Understanding CVE-2018-14840
This CVE highlights a security issue in Subrion CMS 4.2.1 that could be exploited for XSS attacks.
What is CVE-2018-14840?
The vulnerability arises from the .htaccess file in Subrion CMS 4.2.1, which fails to block the uploading of .html files, unlike other file types such as .htm.
The Impact of CVE-2018-14840
The presence of this vulnerability could allow malicious actors to execute XSS attacks, compromising the security of the affected system.
Technical Details of CVE-2018-14840
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The issue in Subrion CMS 4.2.1 allows for XSS attacks as it does not prevent the uploading of .html files, creating a potential security loophole.
Affected Systems and Versions
- Product: Subrion CMS 4.2.1
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited by uploading malicious .html files, enabling attackers to execute XSS attacks.
Mitigation and Prevention
Protecting systems from CVE-2018-14840 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Disable file uploads with .html extensions in Subrion CMS configurations.
- Regularly monitor and audit uploaded files for suspicious content.
Long-Term Security Practices
- Implement input validation to block potentially harmful file types.
- Educate users on safe file uploading practices to prevent XSS vulnerabilities.
Patching and Updates
- Apply patches or updates provided by Subrion CMS to address the vulnerability and enhance system security.