ReDisclosure: New technique for exploiting Full-Text Search in MySQL (myBB case study)

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European organizations should immediately review their use of MySQL Full-Text Search, especially in applications like myBB or similar platforms. Specific mitigation steps include: 1) Conducting a thorough audit of all database queries involving Full-Text Search to identify unsafe input handling or lack of sanitization. 2) Implementing strict input validation and parameterized queries to prevent injection or manipulation attacks. 3) Temporarily disabling Full-Text Search features where feasible until patches or official guidance are available. 4) Monitoring database logs and application behavior for unusual query patterns indicative of exploitation attempts. 5) Engaging with MySQL vendors and community channels to track the release of patches or updates addressing this vulnerability. 6) Applying web application firewalls (WAFs) with custom rules to detect and block suspicious Full-Text Search queries. 7) Educating development and security teams about this new technique to enhance detection and response capabilities. These targeted actions go beyond generic advice by focusing on the specific feature and attack vector involved.