Firebird remote BOF POC
Firebird Remove Buffer Overflow Proof of concept was posted on BugTraq
The bug is the one fixed in the next stable releases and is not present in firebird 2.1 rc1& rc2 here is the description:
Integer overflow in Firebird SQL 1.0.3 and earlier, 1.5.x before 1.5.6, 2.0.x before 2.0.4, and 2.1.x before 2.1.0 RC1 might allow remote attackers to execute arbitrary code