IBM's AIX contains a locally exploitable buffer overflow in libIM which allows attackers to execute code with the privileges of an application calling the library. The "/usr/lpp/X11/bin/aixterm" binary calls the libIM library and is then installed setuid root by default on AIX. The "-im" command line argument used by aixterm causes the binary to crash when filled with a string about 50 bytes in length, allowing attackers to control the return address and run code as root.
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