CVE-2021-39109: Path traversal vulnerability in atlasboard

Background

Atlasboard is an open-source dashboard framework developed by Atlassian. It allows users to create customizable dashboards for monitoring and visualizing data. The vulnerability identified as CVE-2021-39109 affects versions of Atlasboard prior to 1.1.9. This vulnerability enables remote attackers to read arbitrary files through a path traversal vulnerability in the renderWidgetResource resource.

Vulnerability Detail

The renderWidgetResource resource in Atlasboard before version 1.1.9 is susceptible to a path traversal vulnerability. This vulnerability allows remote attackers to access files outside of the intended directory by manipulating the file path in requests. By exploiting this vulnerability, an attacker can read arbitrary files on the server, potentially exposing sensitive information. The impact of this vulnerability depends on the nature of the files that can be accessed and the permissions of the server process.

npm install atlasboard@1.1.9

Workaround

If upgrading to the latest version is not immediately feasible, a temporary workaround can be implemented by implementing input validation and sanitization on the file paths used in the renderWidgetResource resource. By ensuring that only valid and authorized file paths are accepted, the risk of path traversal attacks can be mitigated. Here is an example of how input validation can be implemented in Node.js:

function validateFilePath(filePath) {
  // Implement your validation logic here
  // Return true if the file path is valid, false otherwise
}

function renderWidgetResource(req, res) {
  const filePath = req.query.file;
  if (validateFilePath(filePath)) {
    // Proceed with rendering the widget resource
  } else {
    // Handle invalid file path
  }
}

Conclusion

The path traversal vulnerability in Atlasboard versions prior to 1.1.9 poses a risk of unauthorized file access. To mitigate this vulnerability, it is essential to upgrade to the latest version of Atlasboard or apply the provided workaround. Regularly monitoring for vulnerabilities and keeping dependencies up to date is crucial for maintaining the security of your application. For further assistance and support in vulnerability remediation, please contact DevNack.com.

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