CVE-2020-12827 : Vulnerability Insights and Analysis

MJML prior to 4.6.3 contains a path traversal vulnerability when processing the mj-include directive within an MJML document.

Understanding CVE-2020-12827

MJML version prior to 4.6.3 is susceptible to a path traversal vulnerability, potentially allowing attackers to access sensitive files on the system.

What is CVE-2020-12827?

CVE-2020-12827 is a security vulnerability found in MJML versions before 4.6.3, enabling unauthorized users to traverse file paths within MJML documents.

The Impact of CVE-2020-12827

The vulnerability could lead to unauthorized access to sensitive files, compromising the confidentiality and integrity of data within the affected system.

Technical Details of CVE-2020-12827

MJML version prior to 4.6.3 is affected by a path traversal vulnerability, allowing attackers to access files outside the intended directory.

Vulnerability Description

The vulnerability arises when processing the mj-include directive in MJML documents, enabling malicious actors to navigate through file paths.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions prior to 4.6.3

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the mj-include directive to traverse directories and access unauthorized files.

Mitigation and Prevention

To address CVE-2020-12827, users and administrators should take immediate action to secure their systems.

Immediate Steps to Take

Update MJML to version 4.6.3 or later to mitigate the vulnerability.
Restrict access to MJML files to authorized users only.
Monitor file access and system logs for any suspicious activities.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Implement access controls and permissions to limit file access.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure timely installation of patches and updates released by MJML to address security vulnerabilities and enhance system protection.