hunt-business-logic

Business-logic vulnerabilities are flaws where valid application functions are abused to cause financial impact. They occur when business rules like coupon limits or price validation are improperly enforced, allowing actions such as coupon-race abuse and price tampering.

Reproducing a coupon-race condition requires exploiting TOCTOU flaws by sending concurrent requests to bypass business rule enforcement. You must document the exploit chain, root cause, and evidence following safe-practice workflows to verify the financial impact.

Testing for price-tampering in e-commerce involves analyzing how client-side trust weaknesses allow price-field manipulation. You apply concrete test cases to bypass business rules, verify the financial impact, and document mitigation strategies for the report.

Yes, you can analyze TOCTOU weaknesses in SaaS platforms by assessing how business rules are enforced during time-of-check to time-of-use. This method helps identify client-side trust bypasses and documents exploit chains suitable for security research.

Mitigation strategies for client-side trust vulnerabilities involve enforcing business rules server-side to prevent price-tampering and coupon-race conditions. You document concrete test cases, safe-practice workflows, and verification steps to secure e-commerce and marketplace platforms.