mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-07-05 19:11:15 +00:00
52 lines
2.1 KiB
Diff
52 lines
2.1 KiB
Diff
From 231f969f0478c572afef5f9eeaaf81922f8e027e Mon Sep 17 00:00:00 2001
|
|
From: Daniel Micay <danielmicay@gmail.com>
|
|
Date: Mon, 12 Feb 2018 03:29:58 -0500
|
|
Subject: [PATCH] Harden
|
|
|
|
Change-Id: Idd2da6d9989ec554ce5b0841781d323fdcd9eb87
|
|
---
|
|
init/init.cpp | 6 +++---
|
|
rootdir/init.rc | 4 ++++
|
|
2 files changed, 7 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/init/init.cpp b/init/init.cpp
|
|
index eb9dd755b..504a6d13e 100644
|
|
--- a/init/init.cpp
|
|
+++ b/init/init.cpp
|
|
@@ -577,14 +577,14 @@ int main(int argc, char** argv) {
|
|
mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755");
|
|
mkdir("/dev/pts", 0755);
|
|
mkdir("/dev/socket", 0755);
|
|
- mount("devpts", "/dev/pts", "devpts", 0, NULL);
|
|
+ mount("devpts", "/dev/pts", "devpts", MS_NOSUID|MS_NOEXEC, NULL);
|
|
#define MAKE_STR(x) __STRING(x)
|
|
- mount("proc", "/proc", "proc", 0, "hidepid=2,gid=" MAKE_STR(AID_READPROC));
|
|
+ mount("proc", "/proc", "proc", MS_NOSUID|MS_NODEV|MS_NOEXEC, "hidepid=2,gid=" MAKE_STR(AID_READPROC));
|
|
// Don't expose the raw commandline to unprivileged processes.
|
|
chmod("/proc/cmdline", 0440);
|
|
gid_t groups[] = { AID_READPROC };
|
|
setgroups(arraysize(groups), groups);
|
|
- mount("sysfs", "/sys", "sysfs", 0, NULL);
|
|
+ mount("sysfs", "/sys", "sysfs", MS_NOSUID|MS_NODEV|MS_NOEXEC, NULL);
|
|
mount("selinuxfs", "/sys/fs/selinux", "selinuxfs", 0, NULL);
|
|
|
|
mknod("/dev/kmsg", S_IFCHR | 0600, makedev(1, 11));
|
|
diff --git a/rootdir/init.rc b/rootdir/init.rc
|
|
index 4a8a60a96..6e4accdba 100644
|
|
--- a/rootdir/init.rc
|
|
+++ b/rootdir/init.rc
|
|
@@ -121,6 +121,10 @@ on init
|
|
write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000
|
|
write /proc/sys/kernel/sched_child_runs_first 0
|
|
|
|
+ write /proc/sys/kernel/dmesg_restrict 1
|
|
+ write /proc/sys/net/ipv4/tcp_sack 0
|
|
+ write /proc/sys/net/ipv6/conf/all/use_tempaddr 2
|
|
+ write /proc/sys/net/ipv6/conf/default/use_tempaddr 2
|
|
write /proc/sys/kernel/randomize_va_space 2
|
|
write /proc/sys/vm/mmap_min_addr 32768
|
|
write /proc/sys/net/ipv4/ping_group_range "0 2147483647"
|
|
--
|
|
2.21.0
|
|
|