9a6c3f99ed
- No patches were found with incorrect authorship/From: lines - The older AndroidHardening patch repos are no longer available to verify CID. - New GrapheneOS patches do not include a CID. - *Signature_Spoofing.patch CID could not be found. - Fixed CID of *Harden_Sig_Spoofing.patch to match 14.1 - Fixed CID of *LGE_Fixes.patch to match 14.1 - Fixed CID of *Harden.patch to match 14.1 - Added edit note to *Harden.patch - Fixed CID of *PREREQ_Handle_All_Modes.patch to match 14.1 - Fixed CID of *More_Preferred_Network_Modes.patch to match 14.1 - Fixed CID of *AES256.patch to match 14.1 - Fixed CID of *0001-OTA_Keys.patch to match 18.1 - Fixed CID of *Camera_Fix.patch to match 15.1 - Fixed CID of *Connectivity.patch to match 14.1 - Fixed CID of *Fix_Calling.patch to match 14.1 - Fixed CID of *Remove_Analytics.patch to match 14.1 - Fixed CID of Unused-*.patch/audio_extn to match original Signed-off-by: Tad <tad@spotco.us>
58 lines
2.6 KiB
Diff
58 lines
2.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Micay <danielmicay@gmail.com>
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Date: Mon, 12 Feb 2018 03:29:58 -0500
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Subject: [PATCH] Harden
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Change-Id: I46e3fc4ac896a509ab8ca90ae4ce09b820da434b
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[tad@spotco.us]: added protected fifos and regular from newer GrapheneOS patches
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[tad@spotco.us]: added IPv6 privacy options TODO split into another patch
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---
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init/init.cpp | 6 +++---
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rootdir/init.rc | 11 +++++++++++
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2 files changed, 14 insertions(+), 3 deletions(-)
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diff --git a/init/init.cpp b/init/init.cpp
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index eb9dd755b..504a6d13e 100644
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--- a/init/init.cpp
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+++ b/init/init.cpp
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@@ -577,14 +577,14 @@ int main(int argc, char** argv) {
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mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755");
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mkdir("/dev/pts", 0755);
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mkdir("/dev/socket", 0755);
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- mount("devpts", "/dev/pts", "devpts", 0, NULL);
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+ mount("devpts", "/dev/pts", "devpts", MS_NOSUID|MS_NOEXEC, NULL);
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#define MAKE_STR(x) __STRING(x)
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- mount("proc", "/proc", "proc", 0, "hidepid=2,gid=" MAKE_STR(AID_READPROC));
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+ mount("proc", "/proc", "proc", MS_NOSUID|MS_NODEV|MS_NOEXEC, "hidepid=2,gid=" MAKE_STR(AID_READPROC));
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// Don't expose the raw commandline to unprivileged processes.
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chmod("/proc/cmdline", 0440);
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gid_t groups[] = { AID_READPROC };
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setgroups(arraysize(groups), groups);
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- mount("sysfs", "/sys", "sysfs", 0, NULL);
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+ mount("sysfs", "/sys", "sysfs", MS_NOSUID|MS_NODEV|MS_NOEXEC, NULL);
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mount("selinuxfs", "/sys/fs/selinux", "selinuxfs", 0, NULL);
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mknod("/dev/kmsg", S_IFCHR | 0600, makedev(1, 11));
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diff --git a/rootdir/init.rc b/rootdir/init.rc
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index 9ad628b4e..4ed148857 100644
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--- a/rootdir/init.rc
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+++ b/rootdir/init.rc
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@@ -121,6 +121,17 @@ on init
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write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000
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write /proc/sys/kernel/sched_child_runs_first 0
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+ write /proc/sys/kernel/dmesg_restrict 1
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+ write /proc/sys/fs/protected_hardlinks 1
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+ write /proc/sys/fs/protected_symlinks 1
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+ write /proc/sys/fs/protected_fifos 1
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+ write /proc/sys/fs/protected_regular 1
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+ write /proc/sys/net/ipv6/conf/all/use_tempaddr 2
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+ write /proc/sys/net/ipv6/conf/all/max_addresses 128
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+ write /proc/sys/net/ipv6/conf/all/temp_prefered_lft 21600
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+ write /proc/sys/net/ipv6/conf/default/use_tempaddr 2
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+ write /proc/sys/net/ipv6/conf/default/max_addresses 128
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+ write /proc/sys/net/ipv6/conf/default/temp_prefered_lft 21600
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write /proc/sys/kernel/randomize_va_space 2
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write /proc/sys/vm/mmap_min_addr 32768
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write /proc/sys/net/ipv4/ping_group_range "0 2147483647"
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