Buffer overflow in MDSYS.SDO_CS in Oracle Database Server 8iR3, 9iR1, 9iR2 up to 9.2.0.6, and 10gR1 up to 10.1.0.4 allows remote authenticated users to cause a denial of service (crash) and execute arbitrary code via the TRANSFORM function. NOTE: this issue might already be covered by CVE-2007-5515, CVE-2007-5509, or CVE-2007-5505, but there are insufficient details to be sure.

More... (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-5897)