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BSD: how to avoid core dumps

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This commit is contained in:
heiko
2021-02-28 00:24:29 +01:00
parent 1cad645400
commit 6036cf8437
1 changed files with 15 additions and 3 deletions
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18
afl-system-config
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@ -49,6 +49,12 @@ if [ "$PLATFORM" = "FreeBSD" ] ; then
sysctl kern.elf64.aslr.enable=0 sysctl kern.elf64.aslr.enable=0
} > /dev/null } > /dev/null
echo Settings applied. echo Settings applied.
cat <<EOF
In order to suppress core file generation during fuzzing it is recommended to set
me:\\
:coredumpsize=0:
in the ~/.login_conf file for the user used for fuzzing.
EOF
echo It is recommended to boot the kernel with lots of security off - if you are running a machine that is in a secured network - so set this: echo It is recommended to boot the kernel with lots of security off - if you are running a machine that is in a secured network - so set this:
echo ' sysctl hw.ibrs_disable=1' echo ' sysctl hw.ibrs_disable=1'
echo 'Setting kern.pmap.pg_ps_enabled=0 into /boot/loader.conf might be helpful too.' echo 'Setting kern.pmap.pg_ps_enabled=0 into /boot/loader.conf might be helpful too.'
@ -60,8 +66,14 @@ if [ "$PLATFORM" = "OpenBSD" ] ; then
DONE=1 DONE=1
fi fi
if [ "$PLATFORM" = "DragonFly" ] ; then if [ "$PLATFORM" = "DragonFly" ] ; then
/sbin/sysctl kern.corefile=/dev/null #/sbin/sysctl kern.corefile=/dev/null
echo Settings applied. #echo Settings applied.
cat <<EOF
In order to suppress core file generation during fuzzing it is recommended to set
me:\\
:coredumpsize=0:
in the ~/.login_conf file for the user used for fuzzing.
EOF
DONE=1 DONE=1
fi fi
if [ "$PLATFORM" = "NetBSD" ] ; then if [ "$PLATFORM" = "NetBSD" ] ; then
@ -88,7 +100,7 @@ fi
if [ "$PLATFORM" = "Haiku" ] ; then if [ "$PLATFORM" = "Haiku" ] ; then
SETTINGS=~/config/settings/system/debug_server/settings SETTINGS=~/config/settings/system/debug_server/settings
[ -r ${SETTINGS} ] && grep -qE "default_action\s+kill" ${SETTINGS} && { echo "Nothing to do"; } || { \ [ -r ${SETTINGS} ] && grep -qE "default_action\s+kill" ${SETTINGS} && { echo "Nothing to do"; } || { \
echo We change the debug_server default_action from user to silenty kill; \ echo We change the debug_server default_action from user to silently kill; \
[ ! -r ${SETTINGS} ] && echo "default_action kill" >${SETTINGS} || { mv ${SETTINGS} s.tmp; sed -e "s/default_action\s\s*user/default_action kill/" s.tmp > ${SETTINGS}; rm s.tmp; }; \ [ ! -r ${SETTINGS} ] && echo "default_action kill" >${SETTINGS} || { mv ${SETTINGS} s.tmp; sed -e "s/default_action\s\s*user/default_action kill/" s.tmp > ${SETTINGS}; rm s.tmp; }; \
echo Settings applied.; \ echo Settings applied.; \
} }