CVE-2022-1721 Explained : Impact and Mitigation

A path traversal vulnerability in the WellKnownServlet in the GitHub repository jgraph/drawio before version 18.0.5 allows attackers to read local files within the web application.

Understanding CVE-2022-1721

This CVE refers to a path traversal issue in jgraph/drawio that could be exploited to access sensitive files.

What is CVE-2022-1721?

The CVE-2022-1721 vulnerability involves a path traversal flaw in the WellKnownServlet of jgraph/drawio, enabling unauthorized access to local files.

The Impact of CVE-2022-1721

With a CVSS base score of 7.5, this high severity vulnerability could lead to significant confidentiality impact by allowing attackers to read sensitive files.

Technical Details of CVE-2022-1721

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

Vulnerability Description

The vulnerability arises from improper handling of user input, leading to unauthorized file access within the application.

Affected Systems and Versions

The vulnerability affects versions of jgraph/drawio prior to 18.0.5.

Exploitation Mechanism

By manipulating input to the WellKnownServlet, attackers can navigate through directories and read files stored on the server.

Mitigation and Prevention

To address CVE-2022-1721, immediate actions and long-term security practices are essential.

Immediate Steps to Take

Upgrade jgraph/drawio to version 18.0.5 or later to mitigate the vulnerability.
Restrict access to sensitive files and directories within the application.

Long-Term Security Practices

Implement input validation and sanitization to prevent path traversal attacks.
Regularly monitor and audit file access permissions to detect anomalous behavior.

Patching and Updates

Stay informed about security patches and updates for jgraph/drawio to address vulnerabilities and enhance overall security measures.