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Remove world-writability from per-user directories

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'nix-daemon' now creates subdirectories for users when they first
connect.

Fixes #509 (CVE-2019-17365).
Should also fix #3127.
This commit is contained in:
Eelco Dolstra 2019-10-09 18:01:21 +02:00
parent 4331eeb13d
commit 5a303093dc
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GPG key ID: 8170B4726D7198DE
11 changed files with 41 additions and 43 deletions
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13
scripts/nix-profile-daemon.sh.in
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@ -5,12 +5,6 @@ __ETC_PROFILE_NIX_SOURCED=1
export NIX_USER_PROFILE_DIR="@localstatedir@/nix/profiles/per-user/$USER"
export NIX_PROFILES="@localstatedir@/nix/profiles/default $HOME/.nix-profile"
# Set up the per-user profile.
mkdir -m 0755 -p $NIX_USER_PROFILE_DIR
if ! test -O "$NIX_USER_PROFILE_DIR"; then
echo "WARNING: bad ownership on $NIX_USER_PROFILE_DIR" >&2
fi
if test -w $HOME; then
if ! test -L $HOME/.nix-profile; then
if test "$USER" != root; then
@ -26,13 +20,6 @@ if test -w $HOME; then
echo "https://nixos.org/channels/nixpkgs-unstable nixpkgs" > $HOME/.nix-channels
fi
# Create the per-user garbage collector roots directory.
NIX_USER_GCROOTS_DIR=@localstatedir@/nix/gcroots/per-user/$USER
mkdir -m 0755 -p $NIX_USER_GCROOTS_DIR
if ! test -O "$NIX_USER_GCROOTS_DIR"; then
echo "WARNING: bad ownership on $NIX_USER_GCROOTS_DIR" >&2
fi
# Set up a default Nix expression from which to install stuff.
if [ ! -e $HOME/.nix-defexpr -o -L $HOME/.nix-defexpr ]; then
rm -f $HOME/.nix-defexpr