Time-Based Blind SQL Injection in ClipBucket

Executive Summary

ClipBucket v5 through 5.5.3-#197 has a time-based blind SQL injection vulnerability in the language update function. The language_id parameter is concatenated unescaped into the WHERE clause of an UPDATE statement. An authenticated administrator with basic_settings permission can inject arbitrary SQL payloads to extract or modify database contents.

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Detection Guidance

To detect this vulnerability, check for suspicious SQL queries targeting the language update function in ClipBucket. Monitor database logs for time-based blind SQL injection patterns, such as delayed responses when injecting time delays like SLEEP(5) in the language_id parameter. Review access logs for unusual administrator activity in the language management section.

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Impact Analysis

An attacker with admin access could exploit this to steal sensitive data, modify database records, or perform unauthorized actions. The impact includes potential data breaches, integrity compromise, and unauthorized system access.

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Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's integrity and confidentiality rules. Non-compliance risks include fines, legal penalties, and reputational damage.

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Mitigation Strategies

Immediately update ClipBucket to the latest patched version or apply the security fix by modifying upload/includes/classes/lang.class.php to use $lang['language_id'] instead of $array['language_id'] in the language update function. Restrict administrator access to basic_settings permissions and monitor for unauthorized database modifications.

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