Buffer overflow in the file_comp function in rcp for IBM AIX 4.3.x and 5.1 allows remote attackers to execute arbitrary code.
http://www.kb.cert.org/vuls/id/SVIM-59FJVF
http://www.kb.cert.org/vuls/id/209363
http://www-1.ibm.com/support/search.wss?rs=0&q=IY28698&apar=only
http://www-1.ibm.com/support/search.wss?rs=0&q=IY26503&apar=only