openbsd-ports/sysutils/polkit/patches/patch-src_polkit_polkitunixgroup_c
ajacoutot 77c6597434 SECURITY fix:
Allow negative uids/gids in PolkitUnixUser and Group objects
CVE-2018-19788
2018-12-07 13:11:25 +00:00

68 lines
2.5 KiB
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$OpenBSD: patch-src_polkit_polkitunixgroup_c,v 1.1 2018/12/07 13:11:25 ajacoutot Exp $
From 2cb40c4d5feeaa09325522bd7d97910f1b59e379 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Mon, 3 Dec 2018 10:28:58 +0100
Subject: [PATCH] Allow negative uids/gids in PolkitUnixUser and Group objects
Index: src/polkit/polkitunixgroup.c
--- src/polkit/polkitunixgroup.c.orig
+++ src/polkit/polkitunixgroup.c
@@ -71,6 +71,7 @@ G_DEFINE_TYPE_WITH_CODE (PolkitUnixGroup, polkit_unix_
static void
polkit_unix_group_init (PolkitUnixGroup *unix_group)
{
+ unix_group->gid = -1; /* (git_t) -1 is not a valid GID under Linux */
}
static void
@@ -100,11 +101,14 @@ polkit_unix_group_set_property (GObject *object,
GParamSpec *pspec)
{
PolkitUnixGroup *unix_group = POLKIT_UNIX_GROUP (object);
+ gint val;
switch (prop_id)
{
case PROP_GID:
- unix_group->gid = g_value_get_int (value);
+ val = g_value_get_int (value);
+ g_return_if_fail (val != -1);
+ unix_group->gid = val;
break;
default:
@@ -131,9 +135,9 @@ polkit_unix_group_class_init (PolkitUnixGroupClass *kl
g_param_spec_int ("gid",
"Group ID",
"The UNIX group ID",
- 0,
+ G_MININT,
G_MAXINT,
- 0,
+ -1,
G_PARAM_CONSTRUCT |
G_PARAM_READWRITE |
G_PARAM_STATIC_NAME |
@@ -166,9 +170,10 @@ polkit_unix_group_get_gid (PolkitUnixGroup *group)
*/
void
polkit_unix_group_set_gid (PolkitUnixGroup *group,
- gint gid)
+ gint gid)
{
g_return_if_fail (POLKIT_IS_UNIX_GROUP (group));
+ g_return_if_fail (gid != -1);
group->gid = gid;
}
@@ -183,6 +188,8 @@ polkit_unix_group_set_gid (PolkitUnixGroup *group,
PolkitIdentity *
polkit_unix_group_new (gint gid)
{
+ g_return_val_if_fail (gid != -1, NULL);
+
return POLKIT_IDENTITY (g_object_new (POLKIT_TYPE_UNIX_GROUP,
"gid", gid,
NULL));