diff options
Diffstat (limited to 'external/meta-security/recipes-mac/smack/smack-test')
4 files changed, 132 insertions, 0 deletions
diff --git a/external/meta-security/recipes-mac/smack/smack-test/notroot.py b/external/meta-security/recipes-mac/smack/smack-test/notroot.py new file mode 100644 index 00000000..f0eb0b5b --- /dev/null +++ b/external/meta-security/recipes-mac/smack/smack-test/notroot.py @@ -0,0 +1,33 @@ +#!/usr/bin/env python +# +# Script used for running executables with custom labels, as well as custom uid/gid +# Process label is changed by writing to /proc/self/attr/curent +# +# Script expects user id and group id to exist, and be the same. +# +# From adduser manual: +# """By default, each user in Debian GNU/Linux is given a corresponding group +# with the same name. """ +# +# Usage: root@desk:~# python notroot.py <uid> <label> <full_path_to_executable> [arguments ..] +# eg: python notroot.py 1000 User::Label /bin/ping -c 3 192.168.1.1 +# +# Author: Alexandru Cornea <alexandru.cornea@intel.com> +import os +import sys + +try: + uid = int(sys.argv[1]) + sys.argv.pop(1) + label = sys.argv[1] + sys.argv.pop(1) + open("/proc/self/attr/current", "w").write(label) + path=sys.argv[1] + sys.argv.pop(0) + os.setgid(uid) + os.setuid(uid) + os.execv(path,sys.argv) + +except Exception,e: + print e.message + sys.exit(1) diff --git a/external/meta-security/recipes-mac/smack/smack-test/smack_test_file_access.sh b/external/meta-security/recipes-mac/smack/smack-test/smack_test_file_access.sh new file mode 100644 index 00000000..5a0ce84f --- /dev/null +++ b/external/meta-security/recipes-mac/smack/smack-test/smack_test_file_access.sh @@ -0,0 +1,54 @@ +#!/bin/sh + +SMACK_PATH=`grep smack /proc/mounts | awk '{print $2}' ` +RC=0 +TMP="/tmp" +test_file=$TMP/smack_test_access_file +CAT=`which cat` +ECHO=`which echo` +uid=1000 +initial_label=`cat /proc/self/attr/current` +python $TMP/notroot.py $uid "TheOther" $ECHO 'TEST' > $test_file +chsmack -a "TheOther" $test_file + +# 12345678901234567890123456789012345678901234567890123456 +delrule="TheOne TheOther -----" +rule_ro="TheOne TheOther r----" + +# Remove pre-existent rules for "TheOne TheOther <access>" +echo -n "$delrule" > $SMACK_PATH/load +python $TMP/notroot.py $uid "TheOne" $CAT $test_file 2>&1 1>/dev/null | grep -q "Permission denied" || RC=$? +if [ $RC -ne 0 ]; then + echo "Process with different label than the test file and no read access on it can read it" + exit $RC +fi + +# adding read access +echo -n "$rule_ro" > $SMACK_PATH/load +python $TMP/notroot.py $uid "TheOne" $CAT $test_file | grep -q "TEST" || RC=$? +if [ $RC -ne 0 ]; then + echo "Process with different label than the test file but with read access on it cannot read it" + exit $RC +fi + +# Remove pre-existent rules for "TheOne TheOther <access>" +echo -n "$delrule" > $SMACK_PATH/load +# changing label of test file to * +# according to SMACK documentation, read access on a * object is always permitted +chsmack -a '*' $test_file +python $TMP/notroot.py $uid "TheOne" $CAT $test_file | grep -q "TEST" || RC=$? +if [ $RC -ne 0 ]; then + echo "Process cannot read file with * label" + exit $RC +fi + +# changing subject label to * +# according to SMACK documentation, every access requested by a star labeled subject is rejected +TOUCH=`which touch` +python $TMP/notroot.py $uid '*' $TOUCH $TMP/test_file_2 +ls -la $TMP/test_file_2 2>&1 | grep -q 'No such file or directory' || RC=$? +if [ $RC -ne 0 ];then + echo "Process with label '*' should not have any access" + exit $RC +fi +exit 0 diff --git a/external/meta-security/recipes-mac/smack/smack-test/test_privileged_change_self_label.sh b/external/meta-security/recipes-mac/smack/smack-test/test_privileged_change_self_label.sh new file mode 100644 index 00000000..26d9e9d2 --- /dev/null +++ b/external/meta-security/recipes-mac/smack/smack-test/test_privileged_change_self_label.sh @@ -0,0 +1,18 @@ +#!/bin/sh + +initial_label=`cat /proc/self/attr/current 2>/dev/null` +modified_label="test_label" + +echo "$modified_label" >/proc/self/attr/current 2>/dev/null + +new_label=`cat /proc/self/attr/current 2>/dev/null` + +if [ "$new_label" != "$modified_label" ]; then + # restore proper label + echo $initial_label >/proc/self/attr/current + echo "Privileged process could not change its label" + exit 1 +fi + +echo "$initial_label" >/proc/self/attr/current 2>/dev/null +exit 0
\ No newline at end of file diff --git a/external/meta-security/recipes-mac/smack/smack-test/test_smack_onlycap.sh b/external/meta-security/recipes-mac/smack/smack-test/test_smack_onlycap.sh new file mode 100644 index 00000000..1c4a93ab --- /dev/null +++ b/external/meta-security/recipes-mac/smack/smack-test/test_smack_onlycap.sh @@ -0,0 +1,27 @@ +#!/bin/sh +RC=0 +SMACK_PATH=`grep smack /proc/mounts | awk '{print $2}'` +test_label="test_label" +onlycap_initial=`cat $SMACK_PATH/onlycap` +smack_initial=`cat /proc/self/attr/current` + +# need to set out label to be the same as onlycap, otherwise we lose our smack privileges +# even if we are root +echo "$test_label" > /proc/self/attr/current + +echo "$test_label" > $SMACK_PATH/onlycap || RC=$? +if [ $RC -ne 0 ]; then + echo "Onlycap label could not be set" + return $RC +fi + +if [ `cat $SMACK_PATH/onlycap` != "$test_label" ]; then + echo "Onlycap label was not set correctly." + return 1 +fi + +# resetting original onlycap label +echo "$onlycap_initial" > $SMACK_PATH/onlycap 2>/dev/null + +# resetting our initial's process label +echo "$smack_initial" > /proc/self/attr/current |