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| author | Maxime Devos <maximedevos@telenet.be> | 2021-02-14 12:57:32 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2021-03-10 18:01:47 +0100 |
| commit | 520bac7ed00a949a0391ad680de65a1498105c2b (patch) | |
| tree | 15d2267b31ca62c0ef8b201aa700726aa310fa34 /guix/import | |
| parent | 1a1d0fe505da18c1f43996fb7eb3652e42250d0a (diff) | |
services: Prevent following symlinks during activation.
This addresses a potential security issue, where a compromised
service could trick the activation code in changing the permissions,
owner and group of arbitrary files. However, this patch is
currently only a partial fix, due to a TOCTTOU (time-of-check to
time-of-use) race, which can be fixed once guile has bindings
to openat and friends.
Fixes: <https://lists.gnu.org/archive/html/guix-devel/2021-01/msg00388.html>
* gnu/build/activation.scm: new procedure 'mkdir-p/perms'.
* gnu/services/authentication.scm
(%nslcd-activation, nslcd-service-type): use new procedure.
* gnu/services/cups.scm (%cups-activation): likewise.
* gnu/services/dbus.scm (dbus-activation): likewise.
* gnu/services/dns.scm (knot-activation): likewise.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'guix/import')
0 files changed, 0 insertions, 0 deletions