>[Hackerslab bug_paper] Solaris chkperm buffer overflow > >[Hackerslab:/users/loveyou/buf]$ chkperm -n `perl -e 'print "x" x 200'` >Segmentation fault (core dumped) > >it is recommended that the suid bit is >removed from chkperm using command : > > chmod 400 /usr/vmsys/bin/chkperm Hrm, yeah, I found this one some months ago while I was checking out chkperm's ability to read bin-owned files. After some testing I concluded that, at least on SPARC, the function where the overflow occurs will exit() before it is allowed to return (and then return again), meaning that a buffer overflow exploit is probably not possible. I would be interested to see if anyone came to a different conclusion. Brock Tellier UNIX Systems Administrator Chicago, IL, USA btellierat_private - www.technotronic.com/xnec ____________________________________________________________________ Get free email and a permanent address at http://www.netaddress.com/?N=1
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 15:27:03 PDT