SQLite Use-After-Free in Btree Module

Executive Summary

SQLite 3.41 contains a use-after-free vulnerability in the btree module's shared cache lock management. A BtLock structure is freed without removing it from a linked list. Later traversal of this list accesses the freed memory, potentially causing denial of service or exposing sensitive memory information.

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Detection Guidance

This vulnerability is specific to SQLite 3.41 and involves memory corruption in the btree module. Detection requires checking the SQLite version and analyzing memory access patterns. No direct network detection commands exist, but you can verify SQLite version with 'sqlite3 --version' and monitor for crashes or memory leaks during database operations.

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Impact Analysis

This vulnerability could allow attackers to crash applications using SQLite 3.41, leading to denial of service. It may also enable unauthorized access to sensitive memory contents, potentially exposing confidential data processed by the application.

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Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Organizations using affected SQLite versions may face compliance violations and potential penalties.

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Mitigation Strategies

Upgrade SQLite to a version later than 3.41 to address the use-after-free vulnerability in the btree module's shared cache lock management.

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