Secure Development Process

1. Secure Development Process
   1. Secure Code Reviews: Systematic Security Checks
      1. Structure of a Security-Focused Code Review
      2. Best Practices for ABAP Secure Code Reviews
   2. Automated Security Testing in ABAP Development
      1. Static Application Security Testing for ABAP
      2. Integration into the Development Process
   3. Security Checklists for ABAP Developers
      1. Development Checklist: Before Implementation
      2. Implementation Checklist: During Development
      3. Test Checklist: Before Going Live
      4. Maintenance Checklist: After Going Live

Secure Code Reviews: Systematic Security Checks

Code reviews are already established in ABAP development—but are they also used systematically for security aspects? An effective secure code review goes beyond mere functionality testing and integrates security aspects as an integral part of the quality assurance process.

Structure of a Security-Focused Code Review

Before the review: Preparation is everything The reviewer should first familiarize themselves with the application’s context: What sensitive data is processed? Through which interfaces is the program accessible? What permissions are required? This information determines the risk profile and thus the intensity of the security review.

During the review: systematic approach A structured process prevents important security aspects from being overlooked. Start with the critical areas: input processing, database access, output generation, and authorization checks. Work your way systematically through the code, documenting not only any issues found but also positive security measures.

After the review: follow-up and learning Every secure code review should be documented. What vulnerabilities were found? Which security measures were positively evaluated? This information helps identify recurring problem patterns and continuously improve the team.

Best Practices for ABAP Secure Code Reviews

Focus on critical paths: Not every line of code poses the same security risk. Concentrate on areas involving user input, database access, RFC interfaces, and privileged operations.

Dual-review principle with security expertise: Ideally, at least one reviewer should have in-depth security knowledge. If that is not possible, use checklists and tools to compensate for the lack of expertise.

Documentation of security logic: Verify whether security-critical decisions are documented in the code. Why was a specific validation implemented? What attack vectors is it intended to defend against?

Automated Security Testing in ABAP Development

Manual code reviews are indispensable, but they scale poorly and are prone to errors. Automated security tests can handle recurring checks and support the development team in continuous quality assurance.

Static Application Security Testing for ABAP

Integration into the development environment: Modern static application security testing tools can be integrated directly into the SAP development environment. They analyze the ABAP code during development and flag potential security vulnerabilities before the code reaches the production system.

Automated pattern detection: These tools detect known vulnerability patterns such as potential SQL injection, missing input validation, or insecure cryptography usage. They can also enforce compliance-relevant coding standards.

Continuous monitoring: In the development environment, static application security testing tools can be run automatically with every transport. Critical security vulnerabilities can thus block the transport and force a fix before the code goes live.

Integration into the Development Process

Regular scans: Perform scans at regular intervals—ideally automated after major code changes or before important releases.

Developer feedback: Ensure that results are communicated promptly to the responsible developers. The faster feedback is provided, the more effective the learning process is.

Security Checklists for ABAP Developers

Checklists are a proven means of systematically and thoroughly working through complex processes. They are valuable for ABAP security because they help even less experienced developers avoid overlooking important security aspects.

Development Checklist: Before Implementation

Define security requirements: What sensitive data is being processed? Which user groups should have access? What regulatory requirements must be observed? Have relevant authorization objects been identified? Do custom authorization objects need to be created?

Threat modeling: Which attack vectors are relevant for this specific application? Where are the critical security boundaries?

Implementation Checklist: During Development

Input validation: Are all user inputs validated and sanitized? Are the validation rules sufficiently strict?

Authorization checks: Are all security-critical operations protected by explicit authorization checks?

Secure database access: Are parameterized queries used? Is dynamic SQL avoided or securely implemented?

Output encoding: Is all output encoded context-specifically?

Test Checklist: Before Going Live

Security tests performed: Have all relevant automated security tests been run?

Code review completed: Has a qualified reviewer checked the code for security aspects?

Penetration testing: Have critical applications been validated through sanitization?

Documentation complete: Are all security measures and decisions documented?

Maintenance Checklist: After Going Live

Monitoring active: Are all security-relevant events integrated into monitoring?

Update processes: Are processes for security updates and patch management established?

Regular reassessments: Are regular security reviews planned?

The combination of systematic code reviews, automated tools, and structured checklists creates a robust safety net for your ABAP development. No single tool or process can prevent all security vulnerabilities—but the intelligent combination of different approaches minimizes risk and fosters a culture of continuous security improvement.