diff options
Diffstat (limited to 'afl-system-config')
| -rwxr-xr-x | afl-system-config | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/afl-system-config b/afl-system-config index 366762ef..6a495f0a 100755 --- a/afl-system-config +++ b/afl-system-config @@ -1,9 +1,24 @@ #!/bin/sh +test "$1" = "-h" && { + echo afl-system-config by Marc Heuse + echo + echo $0 + echo + echo afl-system-config has no command line options + echo + echo afl-system reconfigures the system to a high performance fuzzing state + echo WARNING: this reduces the security of the system + echo + exit 1 +} + +PLATFORM=`uname -s` echo This reconfigures the system to have a better fuzzing performance if [ '!' "$EUID" = 0 ] && [ '!' `id -u` = 0 ] ; then echo Error you need to be root to run this exit 1 fi +if [ "$PLATFORM" = "Linux" ] ; then sysctl -w kernel.core_pattern=core sysctl -w kernel.randomize_va_space=0 sysctl -w kernel.sched_child_runs_first=1 @@ -19,5 +34,19 @@ test -e /sys/devices/system/cpu/cpufreq/boost && echo 1 > /sys/devices/system/cp echo echo It is recommended to boot the kernel with lots of security off - if you are running a machine that is in a secured network - so set this: echo '/etc/default/grub:GRUB_CMDLINE_LINUX_DEFAULT="ibpb=off ibrs=off kpti=off l1tf=off mds=off mitigations=off no_stf_barrier noibpb noibrs nopcid nopti nospec_store_bypass_disable nospectre_v1 nospectre_v2 pcid=off pti=off spec_store_bypass_disable=off spectre_v2=off stf_barrier=off"' +fi +if [ "$PLATFORM" = "FreeBSD" ] ; then +sysctl kern.elf32.aslr.enable=0 +sysctl kern.elf64.aslr.enable=0 +echo +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 +echo 'Setting kern.pmap.pg_ps_enabled=0 into /boot/loader.conf might be helpful too.' +fi +if [ "$PLATFORM" = "OpenBSD" ] ; then +echo +echo 'System security features cannot be disabled on OpenBSD.' +fi echo echo Also use AFL_TMPDIR to use a tmpfs for the input file |