Your AI-first
security platform.
Transform your security operations with continuous threat modeling, agentic vulnerability triage and automated discovery of security gaps as your systems evolve.
Intelligence that evolves with you.
We constantly learn from your security operations, building sophisticated understanding that enhances protection.
Adaptive Threat Modeling
System Assets & Associated Threats
Detailed analysis of system components and their associated security threats
PDF Viewer Component
Frontend component using PDF.js for rendering customer documents like invoices and catalogs
Identified Threats
Confidentiality
Integrity
Availability
Mitigations
Update PDF.js to Latest Version
Upgrade PDF.js from version 3.11.174 to 4.2.67 or later to patch the vulnerability
Implement Content Security Policy
Deploy strict CSP headers to prevent inline script execution and limit XSS impact
PDF Viewer Sandboxing
Isolate PDF viewer in sandboxed iframe with restricted permissions
Document Upload Service
Backend microservice handling document uploads, validation, and storage
Identified Threats
Confidentiality
Integrity
Availability
Mitigations
Enhanced File Validation
Implement deep content inspection and malware scanning for uploaded files
File Type Restrictions
Enforce strict file type validation beyond MIME type checking
Web Application Frontend
React-based customer interface with product browsing and checkout functionality
Identified Threats
Confidentiality
Integrity
Availability
Mitigations
Session Security Hardening
Implement secure session management with HttpOnly and SameSite cookie attributes
Authentication State Validation
Add real-time validation of authentication state for sensitive operations
Intelligent Vulnerability Triage
CVE-2024-4367
Security Questionnaire
AI agent automatically analyzes the vulnerability and provides security assessment. Review findings and provide additional context where needed.
Completion Progress
1 of 2 questions answered • Triage will auto-complete when all questions are resolved
Initial Question:
Analyze the codebase and deployment artifacts to determine if PDF.js library is present and what version is being used for document rendering functionality.
Analysis Results
PDF.js Dependencies Scan:- ❌ No PDF.js library found in package.json dependencies
- ❌ No PDF.js imports detected in JavaScript/TypeScript files
- ❌ No PDF rendering components found in React codebase
- ❌ No PDF.js related configuration files detected
- ✅ Found native browser PDF viewer usage via
<embed>and<iframe>tags - ✅ Server-side PDF generation using
puppeteerfor reports - ✅ All PDF processing happens server-side with no client-side PDF.js usage
Conclusion
CVE-2024-4367 is NOT APPLICABLE to this environment. The vulnerability specifically affects PDF.js library implementations, but this application:- Does not use PDF.js library anywhere in the codebase
- Relies on native browser PDF rendering capabilities
- Uses server-side PDF generation that is not affected by this CVE
Initial Question:
Examine the production environment to identify any client-side PDF processing capabilities that might use vulnerable PDF.js versions through third-party integrations or CDN resources.
Critical Finding: Vulnerable PDF.js Integration
DocuSign Integration Discovery:- 🚨 Found PDF.js v3.8.162 embedded in DocuSign web integration
- 🚨 Vulnerable version - affects all versions before 4.2.67
- 🚨 Customer-facing exposure through contract signing workflow
// Found in production HTML
<script
src="https://demo.docusign.net/assets/pdf.js/3.8/pdf.min.js"
/>
// This version is vulnerable to CVE-2024-4367
- Severity: HIGH
- Exposure: Customer contract signing process
- Attack Vector: Malicious PDF uploaded to DocuSign could execute XSS
- Impact: Session hijacking, data theft, unauthorized contract modifications
Recommended Remediation Plan
Immediate Actions (0-24 hours):- Contact DocuSign support to request PDF.js version upgrade
- Implement additional CSP headers to restrict script execution
- Add iframe sandboxing for DocuSign integration
- Evaluate alternative e-signature providers with updated PDF.js
- Implement client-side validation for PDF uploads before DocuSign
- Add monitoring for suspicious PDF-related JavaScript execution
- Migrate to DocuSign API-only integration (no embedded PDF viewer)
- Implement comprehensive third-party dependency scanning
- Create security review process for all vendor integrations
Questions for Security Team
What is your current process for vetting third-party integrations? Understanding this will help prioritize the remediation approach and prevent similar issues. How critical is the embedded DocuSign PDF viewer to your business workflow? This affects whether we should pursue immediate workarounds or plan a more comprehensive migration.Vulnerability Details
CVE ID
CVE-2024-4367
Description
A flaw was found in the PDF.js library where an attacker could execute arbitrary JavaScript when a crafted PDF is viewed in the browser, potentially leading to cross-site scripting (XSS) attacks.
Severity
Status
Autonomous Analysis
Agentic Discovery & Testing
Autonomous Discovery Summary
Real-time security assessment and penetration testing results
Recent Findings
Learns from your work, continuously
- Understands specs, notes, tickets and commits
- Evolves with feedback and refinements
- Keeps system assets and risks up to date
Built for modern security teams
Seamlessly integrate with your existing security stack and development workflow. Our AI-first platform adapts to your infrastructure and scales with your team.
and many more
Ready to transform your security operations?
See how Primesight's AI-first platform automates threat modeling, streamlines vulnerability triage, and maintains real-time visibility into your attack surface..
Let's chat about it
Schedule a meetEmail us
[email protected]