CVE-2019-19646 Explained : Impact and Mitigation

SQLite versions up to 3.30.1 mishandle the NOT NULL constraint in certain scenarios, affecting the integrity_check PRAGMA command.

Understanding CVE-2019-19646

The vulnerability in SQLite can lead to issues with generated columns when processing the integrity_check PRAGMA command.

What is CVE-2019-19646?

The pragma.c file in SQLite versions up to 3.30.1 experiences a mishandling of the NOT NULL constraint in an integrity_check PRAGMA command when dealing with generated columns in certain scenarios.

The Impact of CVE-2019-19646

This vulnerability could potentially lead to integrity issues in SQLite databases, impacting data reliability and consistency.

Technical Details of CVE-2019-19646

SQLite vulnerability details and affected systems.

Vulnerability Description

SQLite through version 3.30.1 mishandles the NOT NULL constraint in an integrity_check PRAGMA command in certain cases of generated columns.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by manipulating the NOT NULL constraint in specific scenarios, affecting the integrity_check PRAGMA command.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2019-19646 vulnerability.

Immediate Steps to Take

Update SQLite to a version beyond 3.30.1 to mitigate the vulnerability.
Regularly monitor SQLite security advisories for any updates or patches.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities in SQLite.
Conduct regular security assessments and audits of SQLite databases.

Patching and Updates

Apply patches or updates provided by SQLite to address the vulnerability and enhance database security.