Improper Lock Owner Evaluation in Laravel MongoDB Cache Integration

Executive Summary

This vulnerability involves improper handling of special elements in data query logic within MongoDB's Laravel integration cache lock. An authenticated user can manipulate the lock owner value to be processed as an aggregation expression instead of a literal value. This allows them to take over or prematurely expire locks held by other processes, leading to duplicated or conflicting operations.

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Detection Guidance

To detect this vulnerability, inspect Laravel applications using the MongoDB Laravel package (laravel-mongodb) for improper handling of cache lock owner values. Check if owner strings starting with $ are incorrectly processed as aggregation expressions. Review code for usage of $eq or $cond in lock operations without $literal wrapping.

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Impact Analysis

If exploited, this vulnerability could allow attackers to disrupt critical operations by taking over locks meant for legitimate processes. This may cause data corruption, inconsistent states, or unauthorized access to sensitive resources, depending on the application's use of locks.

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Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling unauthorized lock takeover or premature lock expiry. This may lead to duplicated or conflicting operations that could compromise data integrity or availability, which are key requirements under these regulations.

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Mitigation Strategies

Update the MongoDB integration for Laravel to the latest patched version to address the improper neutralization of special elements in the cache lock implementation.

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