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do not remove suid from whitelisted binaries ever

Browse source 
https://forums.whonix.org/t/permission-hardening/8655/13
This commit is contained in:
Patrick Schleizer 2019-12-20 08:13:23 -05:00
parent d5f1bd8dd2
commit 6d30e3b4a2
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GPG key ID: CB8D50BB77BB3C48
2 changed files with 28 additions and 8 deletions
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19
usr/lib/security-misc/permission-hardening
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@ -69,6 +69,20 @@ add_nosuid_statoverride_entry() {
echo "INFO: $setuid_output $setguid_output found - file_name: '$file_name' | existing_mode: '$existing_mode' | new_mode: '$new_mode'"
is_whitelisted=""
for white_list_entry in $whitelist ; do
if [ "$file_name" = "$white_list_entry" ]; then
is_whitelisted="true"
## Stop looping through the whitelist.
break
fi
done
if [ "$is_whitelisted" = "true" ]; then
echo "INFO: skip whitelisted: '$file_name'"
continue
fi
if dpkg-statoverride --list | grep -q "$file_name"; then
if ! dpkg-statoverride --list | grep -q "$owner $group $new_mode $file_name"; then
echo_wrapper dpkg-statoverride --remove "$file_name"
@ -115,6 +129,11 @@ set_file_perms() {
fso_without_trailing_slash="${fso%/}"
if [ "$mode_from_config" = "whitelist" ]; then
whitelist+="$fso_without_trailing_slash "
continue
fi
## Use dpkg-statoverride so permissions are not reset during upgrades.
nosuid=""