From 4befb3b1d02f32eb2c56f12e4684a7bb3167b0ee Mon Sep 17 00:00:00 2001 From: "Haelwenn (lanodan) Monnier" Date: Thu, 22 Jun 2023 00:46:52 +0200 Subject: [PATCH] Config: Restrict permissions of OTP config file --- lib/pleroma/config/release_runtime_provider.ex | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/lib/pleroma/config/release_runtime_provider.ex b/lib/pleroma/config/release_runtime_provider.ex index 91e5f1a54..9ec0f975e 100644 --- a/lib/pleroma/config/release_runtime_provider.ex +++ b/lib/pleroma/config/release_runtime_provider.ex @@ -20,6 +20,20 @@ defmodule Pleroma.Config.ReleaseRuntimeProvider do with_runtime_config = if File.exists?(config_path) do + # + %File.Stat{mode: mode} = File.lstat!(config_path) + + if Bitwise.band(mode, 0o007) > 0 do + raise "Configuration at #{config_path} has world-permissions, execute the following: chmod o= #{config_path}" + end + + if Bitwise.band(mode, 0o020) > 0 do + raise "Configuration at #{config_path} has group-wise write permissions, execute the following: chmod g-w #{config_path}" + end + + # Note: Elixir doesn't provides a getuid(2) + # so cannot forbid group-read only when config is owned by us + runtime_config = Config.Reader.read!(config_path) with_defaults