Double Dash, Double Trouble: A Subtle SQL Injection Flaw

This summary highlights a previously unknown vulnerability in several popular SQL client libraries that could be exploited to inject malicious SQL statements into prepared statements. The vulnerability arises from the way libraries handle line comments, particularly when using negative numbers or multi-line strings. This can lead to syntax ambiguity and allow attackers to alter the query syntax, potentially injecting malicious code. Several libraries, including PgJDBC, pg-promise, pgx, pg, and pgdriver, were found to be vulnerable, with some having patches available while others do not. The vulnerability was discovered through a thorough analysis of PostgreSQL client libraries and has been reported to their maintainers, leading to the release of fixed versions. The incident emphasizes the importance of including third-party code in security testing and highlights the benefits of using tools like SonarQube's Advanced SAST and SCA capabilities to detect known vulnerabilities in dependencies.

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