forked from rpms/flatpak
74 lines
3.0 KiB
Diff
74 lines
3.0 KiB
Diff
From 93ecea3488081a726bcd2ddb04d557decaa87f80 Mon Sep 17 00:00:00 2001
|
|
From: Simon McVittie <smcv@collabora.com>
|
|
Date: Mon, 18 Jan 2021 17:52:13 +0000
|
|
Subject: [PATCH] build: Convert environment into a sequence of bwrap arguments
|
|
|
|
This means we can systematically pass the environment variables
|
|
through bwrap(1), even if it is setuid and thus is filtering out
|
|
security-sensitive environment variables. bwrap itself ends up being
|
|
run with an empty environment instead.
|
|
|
|
This fixes a regression when CVE-2021-21261 was fixed: before the
|
|
CVE fixes, LD_LIBRARY_PATH would have been passed through like this
|
|
and appeared in the `flatpak build` shell, but during the CVE fixes,
|
|
the special case that protected LD_LIBRARY_PATH was removed in favour
|
|
of the more general flatpak_bwrap_envp_to_args(). That reasoning only
|
|
works if we use flatpak_bwrap_envp_to_args(), consistently, everywhere
|
|
that we run the potentially-setuid bwrap.
|
|
|
|
Fixes: 6d1773d2 "run: Convert all environment variables into bwrap arguments"
|
|
Resolves: https://github.com/flatpak/flatpak/issues/4080
|
|
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980323
|
|
Signed-off-by: Simon McVittie <smcv@collabora.com>
|
|
(cherry picked from commit 9a61d2c44f0a58cebcb9b2787ae88db07ca68bb0)
|
|
---
|
|
app/flatpak-builtins-build.c | 2 ++
|
|
1 file changed, 2 insertions(+)
|
|
|
|
diff --git a/app/flatpak-builtins-build.c b/app/flatpak-builtins-build.c
|
|
index 8da0de814..07ef6fc07 100644
|
|
--- a/app/flatpak-builtins-build.c
|
|
+++ b/app/flatpak-builtins-build.c
|
|
@@ -569,6 +569,8 @@ flatpak_builtin_build (int argc, char **argv, GCancellable *cancellable, GError
|
|
NULL);
|
|
}
|
|
|
|
+ flatpak_bwrap_envp_to_args (bwrap);
|
|
+
|
|
if (!flatpak_bwrap_bundle_args (bwrap, 1, -1, FALSE, error))
|
|
return FALSE;
|
|
|
|
From f91857c07ede7ef5150a38d6b8e49ee43d6b3d50 Mon Sep 17 00:00:00 2001
|
|
From: Simon McVittie <smcv@collabora.com>
|
|
Date: Mon, 18 Jan 2021 18:07:38 +0000
|
|
Subject: [PATCH] dir: Pass environment via bwrap --setenv when running
|
|
apply_extra
|
|
|
|
This means we can systematically pass the environment variables
|
|
through bwrap(1), even if it is setuid and thus is filtering out
|
|
security-sensitive environment variables. bwrap ends up being
|
|
run with an empty environment instead.
|
|
|
|
As with the previous commit, this regressed while fixing CVE-2021-21261.
|
|
|
|
Fixes: 6d1773d2 "run: Convert all environment variables into bwrap arguments"
|
|
Signed-off-by: Simon McVittie <smcv@collabora.com>
|
|
(cherry picked from commit fb473cad801c6b61706353256cab32330557374a)
|
|
---
|
|
common/flatpak-dir.c | 2 ++
|
|
1 file changed, 2 insertions(+)
|
|
|
|
diff --git a/common/flatpak-dir.c b/common/flatpak-dir.c
|
|
index ed1248e74..40767fa77 100644
|
|
--- a/common/flatpak-dir.c
|
|
+++ b/common/flatpak-dir.c
|
|
@@ -7426,6 +7426,8 @@ apply_extra_data (FlatpakDir *self,
|
|
app_context, NULL, NULL, NULL, cancellable, error))
|
|
return FALSE;
|
|
|
|
+ flatpak_bwrap_envp_to_args (bwrap);
|
|
+
|
|
flatpak_bwrap_add_arg (bwrap, "/app/bin/apply_extra");
|
|
|
|
flatpak_bwrap_finish (bwrap);
|