Oracle ≫ Oracle9i

Oracle listener before Oracle 9i allows attackers to cause a denial of service by repeatedly sending the first portion of a fragmented Oracle command without sending the remainder of the command, which causes the listener to hang.

Oracle listener between Oracle 9i and Oracle 8.0 allows remote attackers to cause a denial of service via a malformed connection packet that contains an incorrect requester_version value that does not match an expected offset to the data.