LibreOffice supports the storage of passwords for web connections in the user’s configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in LibreOffice existed where master key was poorly encoded resulting in weakening its entropy from 128 to 43 bits making the stored passwords vulerable to a brute force attack if an attacker has access to the users stored config. This issue affects: The Document Foundation LibreOffice 7.2 versions prior to 7.2.7; 7.3 versions prior to 7.3.3. A flaw was found in LibreOffice, where the master key was poorly encoded, resulting in weakening its entropy from 128 to 43 bits. This issue makes the stored passwords that are encrypted with a single master key provided by the user vulnerable to a brute force attack if an attacker has access to the user’s stored config.
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