diff options
Diffstat (limited to 'sys-auth/polkit/files/CVE-2018-19788.patch')
| -rw-r--r-- | sys-auth/polkit/files/CVE-2018-19788.patch | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/sys-auth/polkit/files/CVE-2018-19788.patch b/sys-auth/polkit/files/CVE-2018-19788.patch deleted file mode 100644 index 97e3608a12ba..000000000000 --- a/sys-auth/polkit/files/CVE-2018-19788.patch +++ /dev/null @@ -1,339 +0,0 @@ -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 1/2] Allow negative uids/gids in PolkitUnixUser and Group - objects - -(uid_t) -1 is still used as placeholder to mean "unset". This is OK, since -there should be no users with such number, see -https://systemd.io/UIDS-GIDS#special-linux-uids. - -(uid_t) -1 is used as the default value in class initialization. - -When a user or group above INT32_MAX is created, the numeric uid or -gid wraps around to negative when the value is assigned to gint, and -polkit gets confused. Let's accept such gids, except for -1. - -A nicer fix would be to change the underlying type to e.g. uint32 to -not have negative values. But this cannot be done without breaking the -API, so likely new functions will have to be added (a -polkit_unix_user_new variant that takes a unsigned, and the same for -_group_new, _set_uid, _get_uid, _set_gid, _get_gid, etc.). This will -require a bigger patch. - -Fixes https://gitlab.freedesktop.org/polkit/polkit/issues/74. ---- - src/polkit/polkitunixgroup.c | 15 +++++++++++---- - src/polkit/polkitunixprocess.c | 12 ++++++++---- - src/polkit/polkitunixuser.c | 13 ++++++++++--- - 3 files changed, 29 insertions(+), 11 deletions(-) - -diff --git a/src/polkit/polkitunixgroup.c b/src/polkit/polkitunixgroup.c -index c57a1aa..309f689 100644 ---- a/src/polkit/polkitunixgroup.c -+++ b/src/polkit/polkitunixgroup.c -@@ -71,6 +71,7 @@ G_DEFINE_TYPE_WITH_CODE (PolkitUnixGroup, polkit_unix_group, G_TYPE_OBJECT, - 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 *klass) - 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)); -diff --git a/src/polkit/polkitunixprocess.c b/src/polkit/polkitunixprocess.c -index 972b777..b02b258 100644 ---- a/src/polkit/polkitunixprocess.c -+++ b/src/polkit/polkitunixprocess.c -@@ -159,9 +159,14 @@ polkit_unix_process_set_property (GObject *object, - polkit_unix_process_set_pid (unix_process, g_value_get_int (value)); - break; - -- case PROP_UID: -- polkit_unix_process_set_uid (unix_process, g_value_get_int (value)); -+ case PROP_UID: { -+ gint val; -+ -+ val = g_value_get_int (value); -+ g_return_if_fail (val != -1); -+ polkit_unix_process_set_uid (unix_process, val); - break; -+ } - - case PROP_START_TIME: - polkit_unix_process_set_start_time (unix_process, g_value_get_uint64 (value)); -@@ -239,7 +244,7 @@ polkit_unix_process_class_init (PolkitUnixProcessClass *klass) - g_param_spec_int ("uid", - "User ID", - "The UNIX user ID", -- -1, -+ G_MININT, - G_MAXINT, - -1, - G_PARAM_CONSTRUCT | -@@ -303,7 +308,6 @@ polkit_unix_process_set_uid (PolkitUnixProcess *process, - gint uid) - { - g_return_if_fail (POLKIT_IS_UNIX_PROCESS (process)); -- g_return_if_fail (uid >= -1); - process->uid = uid; - } - -diff --git a/src/polkit/polkitunixuser.c b/src/polkit/polkitunixuser.c -index 8bfd3a1..234a697 100644 ---- a/src/polkit/polkitunixuser.c -+++ b/src/polkit/polkitunixuser.c -@@ -72,6 +72,7 @@ G_DEFINE_TYPE_WITH_CODE (PolkitUnixUser, polkit_unix_user, G_TYPE_OBJECT, - static void - polkit_unix_user_init (PolkitUnixUser *unix_user) - { -+ unix_user->uid = -1; /* (uid_t) -1 is not a valid UID under Linux */ - unix_user->name = NULL; - } - -@@ -112,11 +113,14 @@ polkit_unix_user_set_property (GObject *object, - GParamSpec *pspec) - { - PolkitUnixUser *unix_user = POLKIT_UNIX_USER (object); -+ gint val; - - switch (prop_id) - { - case PROP_UID: -- unix_user->uid = g_value_get_int (value); -+ val = g_value_get_int (value); -+ g_return_if_fail (val != -1); -+ unix_user->uid = val; - break; - - default: -@@ -144,9 +148,9 @@ polkit_unix_user_class_init (PolkitUnixUserClass *klass) - g_param_spec_int ("uid", - "User ID", - "The UNIX user ID", -- 0, -+ G_MININT, - G_MAXINT, -- 0, -+ -1, - G_PARAM_CONSTRUCT | - G_PARAM_READWRITE | - G_PARAM_STATIC_NAME | -@@ -182,6 +186,7 @@ polkit_unix_user_set_uid (PolkitUnixUser *user, - gint uid) - { - g_return_if_fail (POLKIT_IS_UNIX_USER (user)); -+ g_return_if_fail (uid != -1); - user->uid = uid; - } - -@@ -196,6 +201,8 @@ polkit_unix_user_set_uid (PolkitUnixUser *user, - PolkitIdentity * - polkit_unix_user_new (gint uid) - { -+ g_return_val_if_fail (uid != -1, NULL); -+ - return POLKIT_IDENTITY (g_object_new (POLKIT_TYPE_UNIX_USER, - "uid", uid, - NULL)); --- -2.18.1 - - -From b534a10727455409acd54018a9c91000e7626126 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 11:20:34 +0100 -Subject: [PATCH 2/2] tests: add tests for high uids - ---- - test/data/etc/group | 1 + - test/data/etc/passwd | 2 + - .../etc/polkit-1/rules.d/10-testing.rules | 21 ++++++ - .../test-polkitbackendjsauthority.c | 72 +++++++++++++++++++ - 4 files changed, 96 insertions(+) - -diff --git a/test/data/etc/group b/test/data/etc/group -index 12ef328..b9acab9 100644 ---- a/test/data/etc/group -+++ b/test/data/etc/group -@@ -5,3 +5,4 @@ john:x:500: - jane:x:501: - sally:x:502: - henry:x:503: -+highuid2:x:4000000000: -diff --git a/test/data/etc/passwd b/test/data/etc/passwd -index 8544feb..5cf14a5 100644 ---- a/test/data/etc/passwd -+++ b/test/data/etc/passwd -@@ -3,3 +3,5 @@ john:x:500:500:John Done:/home/john:/bin/bash - jane:x:501:501:Jane Smith:/home/jane:/bin/bash - sally:x:502:502:Sally Derp:/home/sally:/bin/bash - henry:x:503:503:Henry Herp:/home/henry:/bin/bash -+highuid1:x:2147483648:2147483648:The first high uid:/home/highuid1:/sbin/nologin -+highuid2:x:4000000000:4000000000:An example high uid:/home/example:/sbin/nologin -diff --git a/test/data/etc/polkit-1/rules.d/10-testing.rules b/test/data/etc/polkit-1/rules.d/10-testing.rules -index 446e622..98bf062 100644 ---- a/test/data/etc/polkit-1/rules.d/10-testing.rules -+++ b/test/data/etc/polkit-1/rules.d/10-testing.rules -@@ -53,6 +53,27 @@ polkit.addRule(function(action, subject) { - } - }); - -+polkit.addRule(function(action, subject) { -+ if (action.id == "net.company.john_action") { -+ if (subject.user == "john") { -+ return polkit.Result.YES; -+ } else { -+ return polkit.Result.NO; -+ } -+ } -+}); -+ -+polkit.addRule(function(action, subject) { -+ if (action.id == "net.company.highuid2_action") { -+ if (subject.user == "highuid2") { -+ return polkit.Result.YES; -+ } else { -+ return polkit.Result.NO; -+ } -+ } -+}); -+ -+ - // --------------------------------------------------------------------- - // variables - -diff --git a/test/polkitbackend/test-polkitbackendjsauthority.c b/test/polkitbackend/test-polkitbackendjsauthority.c -index b484a26..71aad23 100644 ---- a/test/polkitbackend/test-polkitbackendjsauthority.c -+++ b/test/polkitbackend/test-polkitbackendjsauthority.c -@@ -330,6 +330,78 @@ static const RulesTestCase rules_test_cases[] = { - NULL, - POLKIT_IMPLICIT_AUTHORIZATION_AUTHORIZED, - }, -+ -+ { -+ /* highuid1 is not a member of group 'users', see test/data/etc/group */ -+ "group_membership_with_non_member(highuid22)", -+ "net.company.group.only_group_users", -+ "unix-user:highuid2", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED, -+ }, -+ -+ { -+ /* highuid2 is not a member of group 'users', see test/data/etc/group */ -+ "group_membership_with_non_member(highuid21)", -+ "net.company.group.only_group_users", -+ "unix-user:highuid2", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED, -+ }, -+ -+ { -+ /* highuid1 is not a member of group 'users', see test/data/etc/group */ -+ "group_membership_with_non_member(highuid24)", -+ "net.company.group.only_group_users", -+ "unix-user:2147483648", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED, -+ }, -+ -+ { -+ /* highuid2 is not a member of group 'users', see test/data/etc/group */ -+ "group_membership_with_non_member(highuid23)", -+ "net.company.group.only_group_users", -+ "unix-user:4000000000", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED, -+ }, -+ -+ { -+ /* john is authorized to do this, see 10-testing.rules */ -+ "john_action", -+ "net.company.john_action", -+ "unix-user:john", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_AUTHORIZED, -+ }, -+ -+ { -+ /* only john is authorized to do this, see 10-testing.rules */ -+ "jane_action", -+ "net.company.john_action", -+ "unix-user:jane", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED, -+ }, -+ -+ { -+ /* highuid2 is authorized to do this, see 10-testing.rules */ -+ "highuid2_action", -+ "net.company.highuid2_action", -+ "unix-user:highuid2", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_AUTHORIZED, -+ }, -+ -+ { -+ /* only highuid2 is authorized to do this, see 10-testing.rules */ -+ "highuid1_action", -+ "net.company.highuid2_action", -+ "unix-user:highuid1", -+ NULL, -+ POLKIT_IMPLICIT_AUTHORIZATION_NOT_AUTHORIZED, -+ }, - }; - - /* ---------------------------------------------------------------------------------------------------- */ --- -2.18.1 - |