48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
From 641a7f0c61ff42ea55ad7152e7f874ea5d680a2d Mon Sep 17 00:00:00 2001
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From: Dan Walsh <dwalsh@redhat.com>
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Date: Wed, 9 Mar 2016 09:29:25 -0500
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Subject: [PATCH] /dev/console must be labeled with SELinux label
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If the user specifies an selinux_apifs_context all content created in
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the container including /dev/console should use this label.
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Currently when this uses the default label it gets labeled user_devpts_t,
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which would require us to write a policy allowing container processes to
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manage user_devpts_t. This means that an escaped process would be allowed
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to attack all users terminals as well as other container terminals. Changing
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the label to match the apifs_context, means the processes would only be allowed
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to manage their specific tty.
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This change fixes a problem preventing RKT containers from working with systemd-nspawn.
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(cherry picked from commit 68b020494d1ff085281061413d9236b5865ef238)
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---
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src/nspawn/nspawn.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
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index ef348c335b..8c06f6ef75 100644
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--- a/src/nspawn/nspawn.c
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+++ b/src/nspawn/nspawn.c
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@@ -87,6 +87,7 @@
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#ifdef HAVE_SECCOMP
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#include "seccomp-util.h"
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#endif
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+#include "selinux-util.h"
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#include "signal-util.h"
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#include "socket-util.h"
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#include "stat-util.h"
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@@ -3286,6 +3287,12 @@ int main(int argc, char *argv[]) {
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goto finish;
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}
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+ if (arg_selinux_apifs_context) {
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+ r = mac_selinux_apply(console, arg_selinux_apifs_context);
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+ if (r < 0)
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+ goto finish;
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+ }
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+
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if (unlockpt(master) < 0) {
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r = log_error_errno(errno, "Failed to unlock tty: %m");
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goto finish;
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