Database read and write via shared credentials

Hard-coded Firebird credentials in six TIK-SOFT Finka programs allow remote attackers on the local network to read and edit database content. Each program embeds the same Firebird database username and password across installations, so the database accepts shared secrets instead of instance-specific credentials. Network reachability to the Firebird service and knowledge of the default credentials are sufficient; the reported impact is limited to reading and modifying database records.