Multiple buffer overflows in Firebird 1.5, one of which affects WNET, have unknown impact and attack vectors. NOTE: this issue might overlap CVE-2006-1240.

Multiple unspecified vulnerabilities in Firebird 1.5 allow remote attackers to (1) cause a denial of service (application crash) by sending many remote protocol versions; and (2) cause a denial of service (connection drop) via certain network traffic

Firebird 1.5 allows remote authenticated users without SYSDBA and owner permissions to overwrite a database by creating a database.

fb_lock_mgr in Firebird 1.5 uses weak permissions (0666) for the semaphore array, which allows local users to cause a denial of service (blocked query processing) by locking semaphores.