GHSA-vrjr-p3xp-xx2x

### Summary Exposure of database (ie postgreSQL) server's credential when connection to DB fails. ### Details Exposed database credentials upon misconfig/DoS @ permalink: https://github.com/thorsten/phpMyFAQ/blob/main/phpmyfaq/src/phpMyFAQ/Setup/Installer.php#L694 ### PoC When postgreSQL server is unreachable, an error would be thrown exposing the credentials of the database. For instance, when "http://<phpmyfaq-instance>:8080/setup/index.php" is hit when the database instance/server is down, then credentials are exposed, for instance: ``` ( ! ) Warning: pg_connect(): Unable to connect to PostgreSQL server: connection to server at &quot;127.0.0.1&quot;, port 5432 failed: Connection refused Is the server running on that host and accepting TCP/IP connections? in /var/www/html/src/phpMyFAQ/Database/Pgsql.php on line 78 Call Stack # Time Memory Function Location 1 0.0404 453880 {main}( ) .../index.php:0 2 1.1341 610016 phpMyFAQ\Setup\Installer->startInstall( $setup = ??? ) .../index.php:471 3 1.2113 611544 phpMyFAQ\Database\Pgsql->connect( $host = '127.0.0.1', $user = 'cvecve', $password = '<redacted>', $database = 'cvecve', $port = 5432 ) .../Installer.php:694 4 1.2113 611864 pg_connect( $connection_string = 'host=127.0.0.1 port=5432 dbname=cvecve user=cvecve password=<redacted>' ) .../Pgsql.php:78 ( ! ) Fatal error: Uncaught TypeError: Cannot assign false to property phpMyFAQ\Database\Pgsql::$conn of type ?PgSql\Connection in /var/www/html/src/phpMyFAQ/Database/Pgsql.php on line 78 ( ! ) TypeError: Cannot assign false to property phpMyFAQ\Database\Pgsql::$conn of type ?PgSql\Connection in /var/www/html/src/phpMyFAQ/Database/Pgsql.php on line 78 Call Stack # Time Memory Function Location 1 0.0404 453880 {main}( ) .../index.php:0 2 1.1341 610016 phpMyFAQ\Setup\Installer->startInstall( $setup = ??? ) .../index.php:471 3 1.2113 611544 phpMyFAQ\Database\Pgsql->connect( $host = '127.0.0.1', $user = 'cvecve', $password = '<redacted>', $database = 'cvecve', $port = 5432 ) .../Installer.php:694 ```  A way to force this would be to perform a denial of service on the database instance/server. When the db connection is refused, the credentials would show. The remote attacker can then use that to gain full control on the database. ### Impact This vulnerability exposes the credentials of the database and grants a remote attacker full control over the database. First notified Snyk on 16 Jan 2024.