CVE-2025-57347

Comprehensive Technical Analysis of CVE-2025-57347

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-57347 CVSS Score: 9.8

The vulnerability in the 'dagre-d3-es' Node.js package version 7.0.9, specifically within the 'bk' module's addConflict function, is classified as a prototype pollution vulnerability. This type of vulnerability occurs when an attacker can manipulate the JavaScript Object prototype chain by injecting malicious input values, such as __proto__. The high CVSS score of 9.8 indicates a critical severity, reflecting the potential for significant impact if exploited.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• User-Supplied Input: The primary attack vector involves user-supplied input that is not properly sanitized. An attacker can inject malicious values into the input fields processed by the addConflict function.
• Prototype Pollution: By injecting properties like __proto__, an attacker can modify the prototype chain, affecting all objects derived from the polluted prototype.

Exploitation Methods:

• Denial of Service (DoS): Modifying critical properties can lead to application crashes or unresponsiveness.
• Arbitrary Code Execution: If the polluted properties are later accessed or executed, it could lead to the execution of arbitrary code.
• Unexpected Application Behavior: Altering the prototype chain can cause unpredictable behavior in the application, leading to data corruption or other security issues.

3. Affected Systems and Software Versions

Affected Software:

• Node.js Package: dagre-d3-es
• Versions: All versions prior to 7.0.11

Systems:

• Any system or application that uses the affected versions of the dagre-d3-es package is at risk. This includes web applications, server-side applications, and any other software that relies on this package for graph layout and rendering.

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade: Upgrade to version 7.0.11 or later of the dagre-d3-es package, which includes the necessary patches to mitigate this vulnerability.
• Input Sanitization: Ensure that all user-supplied input is properly sanitized and validated to prevent prototype pollution attacks.
• Monitoring: Implement monitoring and logging to detect any unusual behavior or modifications to the prototype chain.

Long-Term Strategies:

• Code Review: Conduct thorough code reviews to identify and address similar vulnerabilities in other parts of the codebase.
• Security Training: Provide training for developers on secure coding practices, particularly around input validation and sanitization.
• Regular Updates: Maintain a regular update schedule for all dependencies to ensure that the latest security patches are applied.

5. Impact on Cybersecurity Landscape

The discovery of this vulnerability highlights the ongoing challenge of securing JavaScript applications, particularly those that rely on third-party libraries. Prototype pollution vulnerabilities can have far-reaching consequences, affecting not only the immediate application but also any downstream applications that rely on the polluted prototype chain. This underscores the importance of robust input validation and regular security audits of third-party dependencies.

6. Technical Details for Security Professionals

Vulnerability Details:

• Module: bk
• Function: addConflict
• Issue: Failure to sanitize user-supplied input during property assignment operations.

Exploitation Example:

const payload = {
  "__proto__.polluted": true
};
addConflict(payload);

Detection:

• Static Analysis: Use static analysis tools to detect unsanitized input assignments.
• Dynamic Analysis: Implement runtime checks to monitor for unexpected modifications to the prototype chain.

Mitigation Code Example:

function sanitizeInput(input) {
  if (input.hasOwnProperty('__proto__')) {
    throw new Error('Invalid input detected');
  }
  return input;
}

function addConflict(input) {
  const sanitizedInput = sanitizeInput(input);
  // Proceed with the sanitized input
}

References:

• GitHub PoC
• GitHub Issue

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of prototype pollution attacks and enhance the overall security posture of their applications.