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Accepting request 201242 from home:sreeves1:branches:Base:System

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fix bnc#838939

OBS-URL: https://build.opensuse.org/request/show/201242
OBS-URL: https://build.opensuse.org/package/show/Base:System/rtkit?expand=0&rev=21
This commit is contained in:
Scott Reeves 2013-09-27 22:36:06 +00:00 committed by Git OBS Bridge
parent ce4ef65595
commit 0bf47c6914
3 changed files with 53 additions and 1 deletions
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43
rtkit-bnc836939.patch Normal file
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@ -0,0 +1,43 @@
commit 88d4082ef6caf6b071d749dca1c50e7edde914cc
Author: Colin Walters <walters@verbum.org>
Date: Thu Aug 22 16:05:22 2013 -0400
Pass uid of caller to polkit
Otherwise, we force polkit to look up the uid itself in /proc, which
is racy if they execve() a setuid binary.
diff --git a/rtkit-daemon.c b/rtkit-daemon.c
index 2ebe673..3ecc1f7 100644
--- a/rtkit-daemon.c
+++ b/rtkit-daemon.c
@@ -1170,12 +1170,14 @@ static int verify_polkit(DBusConnection *c, struct rtkit_user *u, struct process
DBusMessage *m = NULL, *r = NULL;
const char *unix_process = "unix-process";
const char *pid = "pid";
+ const char *uid = "uid";
const char *start_time = "start-time";
const char *cancel_id = "";
uint32_t flags = 0;
uint32_t pid_u32 = p->pid;
- uint64_t start_time_u64 = p->starttime;
+ uint32_t uid_u32 = (uint32_t)u->uid;
DBusMessageIter iter_msg, iter_struct, iter_array, iter_dict, iter_variant;
+ uint64_t start_time_u64 = p->starttime;
int ret;
dbus_bool_t authorized = FALSE;
@@ -1206,6 +1208,13 @@ static int verify_polkit(DBusConnection *c, struct rtkit_user *u, struct process
assert_se(dbus_message_iter_close_container(&iter_dict, &iter_variant));
assert_se(dbus_message_iter_close_container(&iter_array, &iter_dict));
+ assert_se(dbus_message_iter_open_container(&iter_array, DBUS_TYPE_DICT_ENTRY, NULL, &iter_dict));
+ assert_se(dbus_message_iter_append_basic(&iter_dict, DBUS_TYPE_STRING, &uid));
+ assert_se(dbus_message_iter_open_container(&iter_dict, DBUS_TYPE_VARIANT, "u", &iter_variant));
+ assert_se(dbus_message_iter_append_basic(&iter_variant, DBUS_TYPE_UINT32, &uid_u32));
+ assert_se(dbus_message_iter_close_container(&iter_dict, &iter_variant));
+ assert_se(dbus_message_iter_close_container(&iter_array, &iter_dict));
+
assert_se(dbus_message_iter_close_container(&iter_struct, &iter_array));
assert_se(dbus_message_iter_close_container(&iter_msg, &iter_struct));

6
rtkit.changes
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@ -1,3 +1,9 @@
-------------------------------------------------------------------
Fri Sep 27 22:21:16 UTC 2013 - sreeves@suse.com
- Add rtkit-bnc836939.patch
Fix bnc#836939 - use of insecure polkit DBUS API. CVE-2013-4326
-------------------------------------------------------------------
Wed Oct 17 14:13:55 UTC 2012 - fcrozat@suse.com

5
rtkit.spec
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@ -1,7 +1,7 @@
#
# spec file for package rtkit
#
# Copyright (c) 2012 SUSE LINUX Products GmbH, Nuernberg, Germany.
# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -39,6 +39,8 @@ BuildRequires: pkgconfig(libsystemd-daemon)
%define has_systemd 1
%endif
Patch0: rtkit-use-system-sd-daemon.patch
# PATCH-FIX-UPSTREAM rtkit-bnc836939.patch sreeves@suse.com -- use of insecure polkit DBUS API
Patch1: rtkit-bnc836939.patch
%description
RealtimeKit is a D-Bus system service that changes the
@ -50,6 +52,7 @@ processes.
%prep
%setup -q
%patch0 -p1
%patch1 -p1
%build
autoreconf -fiv