IBM DB2 UDB 8 before Fixpak 15 and 9.1 before Fixpak 3 allows local users to create arbitrary directories and execute arbitrary code via a "crafted localized message file" that enables a format string attack, possibly involving the (1) OSSEMEMDBG or (2) TRC_LOG_FILE environment variable in db2licd (db2licm).
Use of Externally-Controlled Format String The product uses a function that accepts a format string as an argument, but the format string originates from an external source.