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, as demonstrated by Nessus vulnerability scanning.

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.

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

fblockmgr 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.

Buffer overflow in inetserver.cpp in (1) fbinetserver and (2) fbserver in Firebird 1.5.2.4731 allows local users to gain privileges via a long value of the -p argument.