unix-privesc-check/lib/misc/kernel

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2012-12-20 22:42:13 +00:00
#!/bin/sh
# $Revision: 324 $
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# (c) Tim Brown, 2012
# <mailto:timb@nth-dimension.org.uk>
# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
#
# Supports: Linux, AIX, Solaris
if [ -z "${kernelincluded}" ]
then
kernelincluded=1
. lib/misc/dependencies
. lib/misc/file
. lib/misc/validate
kernel_aslr_pax() {
if [ -n "`cat /proc/1/status | grep \"PaX:\" | grep \"R\"`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
}
kernel_aslr() {
if [ "`uname`" = "Linux" ]
then
sysctl kernel.randomize_va_space | while read _ _ value
do
printf -- "${value}\n"
break
done
else
printf -- "0\n"
fi
}
kernel_nx() {
if [ "`uname`" = "Linux" ]
then
if [ -n "`egrep -- \"^flags\" /proc/cpuinfo | egrep -- \"nx\"`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
elif [ "`uname`" = "SunOS" ]
then
if [ -n "`egrep -- \"noexec_user_stack\" /etc/system | egrep -v \"_log\" | egrep -- \"1\"`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
# TODO does uname return HP-UX or HPUX?
elif [ "`uname`" = "HP-UX" ]
then
kmtune -q "executable_stack" | egrep -- \"executable_stack\" | while read _ value _
do
case "${value}" in
0)
printf -- "1\n"
;;
1)
printf -- "0\n"
;;
esac
done
fi
}
kernel_nx_logging () {
if [ "`uname`" = "SunOS" ]
then
if [ -n "`egrep -- \"noexec_user_stack_log\" /etc/system | egrep -- \"1\"`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
# TODO does uname return HP-UX or HPUX?
elif [ "`uname`" = "HP-UX" ]
then
kmtune -q "executable_stack" | egrep -- \"executable_stack\" | while read _ value _
do
case "${value}" in
2)
printf -- "0\n"
;;
*)
printf -- "1\n"
;;
esac
done
else
printf -- "0\n"
fi
}
kernel_nx_audit () {
if [ "`uname`" = "SunOS" ]
then
if [ -n "`egrep -- \"c2audit:audit_load\" /etc/system | egrep -- \"1\"`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
else
printf -- "0\n"
fi
}
kernel_mmap_zero_allowed () {
if [ "`uname`" = "Linux" ]
then
if [ "`cat /proc/sys/vm/mmap_min_addr`" -eq 0 -o -z "`cat /proc/sys/vm/mmap_min_addr`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
else
printf -- "0\n"
fi
}
kernel_selinux_enforce () {
if [ "`file_exists_file \"/selinux/enforce\"`" -eq 1 ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
}
kernel_release() {
printf -- "`uname -r`\n"
}
kernel_release_is_backported() {
if [ -n "`kernel_version | egrep -- \"-\"`" ]
then
printf -- "1\n"
else
printf -- "0\n"
fi
}
fi