Overview
In this era of digital transformation, businesses rely heavily on Customer Relationship Management (CRM) systems to manage operations, streamline workflows, and enhance customer interactions. However, with the increasing dependence on digital platforms, ensuring robust security measures is crucial to protect sensitive data and maintain business integrity.
An organization offering a CRM solution engaged us for a comprehensive security assessment of their application. The CRM system was a large-scale application with multiple user levels, various input and upload fields, and Microsoft multi-factor authentication (MFA) for login security. Due to the need for repeated token retrieval for authentication, the client provided a developer parameter to bypass MFA during testing.
Given the complex user role structure and the extensive functionalities within the CRM, our team conducted an in-depth security evaluation by creating multiple user accounts and assigning them to different team members for effective testing.
Challenges Faced:
- Complex User Role Management:
- Authentication Issues:
- The Microsoft MFA requirement complicated login processes.
- The client provided a developer parameter to facilitate easier authentication.
- Data Security & Input Validation:
- The application had a high number of input fields, creating numerous potential attack vectors.
- Upload fields posed a risk for malicious file execution.
- Bug Tracking & Coordination:
- Multiple team members were involved in the testing process.
- A systematic approach was required to document, validate, and report vulnerabilities.
- Delayed Patch Implementation:
Key Findings & Observations:
Our testing revealed a significant number of security vulnerabilities, some of which were widespread across different user roles. Key vulnerabilities identified included:
- Stored HTML Injection in Email
- Weak Password Reset Policy
- Stored XSS across multiple user input fields
- XSS via File Upload
- Reflected XSS & Stored XSS in various CRM sections
- 403 Bypass revealing .git repository information, and many more
Our Solutions
To address these security concerns, we took the following steps:
- Comprehensive Role-Based Testing:
- Detailed Bug Tracking & Reporting:
- Maintained a centralized bug tracking sheet.
- Conducted internal validation before submitting reports to the client.
- Security Hardening Measures Suggested:
- Implemented input validation and sanitization to mitigate XSS and HTML injection.
- Recommended stronger password reset policies.
- Advised on rate-limiting mechanisms to prevent abuse of CRM functionalities.
- Suggested secure authentication practices to enhance login security.
- Effective Communication with the Client:
- Conducted meetings and discussions to explain vulnerabilities and remediation steps.
- Provided detailed Proof of Concept (PoC) reports to illustrate the impact of each issue.
- Validation of Fixes:
- Re-tested vulnerabilities after client-side fixes.
- Identified areas where patches were ineffective or incomplete.
- Offered additional guidance to ensure a proper resolution.
Benefits:
- Improved Security Posture:
- Reduced Risk of Exploitation:
- Fixed issues prevented potential data breaches and unauthorized access.
- Enhanced Client Confidence:
- The client gained assurance in the application’s security, improving their product’s credibility.
- Structured Approach to Security Testing:
Conclusion
In today’s digital era, businesses must prioritize cyber security to protect sensitive customer and business data. Despite the complexities of multi-user role testing and client-side delays, our team effectively conducted a comprehensive security assessment of the CRM application. We identified critical vulnerabilities, provided timely reports, and assisted in remediation efforts. Although some fixes were initially ineffective, continued collaboration ensured a secure final product.
