From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#37744: Per-user profile directory hijack (CVE-2019-17365 for Nix)
Date: Mon, 14 Oct 2019 09:47:35 +0200
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To: 37744@debbugs.gnu.org
Cc: GNU Guix maintainers <guix-maintainers@gnu.org>, guix-security@gnu.org

Hello Guix,

That the per-user profile directory is world-writable allows an attacker
to hijack code run by other users, as has been reported in the context
of Nix:

  https://www.openwall.com/lists/oss-security/2019/10/09/4

I believe it applies to Guix as well.

Nix people are tracking it here:

   https://github.com/NixOS/nix/pull/3134
   https://github.com/NixOS/nix/issues/509

Looks like we=E2=80=99ll need to do something similar to:
<https://github.com/NixOS/nix/pull/3136/commits/5a303093dcae1e5ce9212616ef1=
8f2ca51020b0d>.

Thoughts?

Thanks,
Ludo=E2=80=99.