From 739c65c54cb0e957df5e9b76f93fb02554e5cac3 Mon Sep 17 00:00:00 2001 From: davidovski Date: Wed, 4 May 2022 23:52:30 +0100 Subject: moved everything to new file formatting --- repo/system/polkit/patches/CVE-2021-4034.patch | 79 +++++++ .../polkit/patches/make-innetgr-optional.patch | 239 +++++++++++++++++++++ 2 files changed, 318 insertions(+) create mode 100644 repo/system/polkit/patches/CVE-2021-4034.patch create mode 100644 repo/system/polkit/patches/make-innetgr-optional.patch (limited to 'repo/system/polkit/patches') diff --git a/repo/system/polkit/patches/CVE-2021-4034.patch b/repo/system/polkit/patches/CVE-2021-4034.patch new file mode 100644 index 0000000..a06300a --- /dev/null +++ b/repo/system/polkit/patches/CVE-2021-4034.patch @@ -0,0 +1,79 @@ +From a2bf5c9c83b6ae46cbd5c779d3055bff81ded683 Mon Sep 17 00:00:00 2001 +From: Jan Rybar +Date: Tue, 25 Jan 2022 17:21:46 +0000 +Subject: [PATCH] pkexec: local privilege escalation (CVE-2021-4034) + +--- + src/programs/pkcheck.c | 5 +++++ + src/programs/pkexec.c | 23 ++++++++++++++++++++--- + 2 files changed, 25 insertions(+), 3 deletions(-) + +diff --git a/src/programs/pkcheck.c b/src/programs/pkcheck.c +index f1bb4e1..768525c 100644 +--- a/src/programs/pkcheck.c ++++ b/src/programs/pkcheck.c +@@ -363,6 +363,11 @@ main (int argc, char *argv[]) + local_agent_handle = NULL; + ret = 126; + ++ if (argc < 1) ++ { ++ exit(126); ++ } ++ + /* Disable remote file access from GIO. */ + setenv ("GIO_USE_VFS", "local", 1); + +diff --git a/src/programs/pkexec.c b/src/programs/pkexec.c +index 7698c5c..84e5ef6 100644 +--- a/src/programs/pkexec.c ++++ b/src/programs/pkexec.c +@@ -488,6 +488,15 @@ main (int argc, char *argv[]) + pid_t pid_of_caller; + gpointer local_agent_handle; + ++ ++ /* ++ * If 'pkexec' is called THIS wrong, someone's probably evil-doing. Don't be nice, just bail out. ++ */ ++ if (argc<1) ++ { ++ exit(127); ++ } ++ + ret = 127; + authority = NULL; + subject = NULL; +@@ -614,10 +623,10 @@ main (int argc, char *argv[]) + + path = g_strdup (pwstruct.pw_shell); + if (!path) +- { ++ { + g_printerr ("No shell configured or error retrieving pw_shell\n"); + goto out; +- } ++ } + /* If you change this, be sure to change the if (!command_line) + case below too */ + command_line = g_strdup (path); +@@ -636,7 +645,15 @@ main (int argc, char *argv[]) + goto out; + } + g_free (path); +- argv[n] = path = s; ++ path = s; ++ ++ /* argc<2 and pkexec runs just shell, argv is guaranteed to be null-terminated. ++ * /-less shell shouldn't happen, but let's be defensive and don't write to null-termination ++ */ ++ if (argv[n] != NULL) ++ { ++ argv[n] = path; ++ } + } + if (access (path, F_OK) != 0) + { +-- +GitLab + diff --git a/repo/system/polkit/patches/make-innetgr-optional.patch b/repo/system/polkit/patches/make-innetgr-optional.patch new file mode 100644 index 0000000..8459c67 --- /dev/null +++ b/repo/system/polkit/patches/make-innetgr-optional.patch @@ -0,0 +1,239 @@ +See https://gitlab.freedesktop.org/polkit/polkit/merge_requests/10 + +From 778bb45e0e0cbabe2b04adf67a500af1dab09768 Mon Sep 17 00:00:00 2001 +From: "A. Wilcox" +Date: Wed, 11 Jul 2018 04:54:26 -0500 +Subject: [PATCH] make netgroup support optional + +On at least Linux/musl and Linux/uclibc, netgroup support is not +available. PolKit fails to compile on these systems for that reason. + +This change makes netgroup support conditional on the presence of the +setnetgrent(3) function which is required for the support to work. If +that function is not available on the system, an error will be returned +to the administrator if unix-netgroup: is specified in configuration. + +Fixes bug 50145. + +Closes polkit/polkit#14. + +Signed-off-by: A. Wilcox +--- +diff --git a/configure.ac b/configure.ac +index 4ac2219..ca478df 100644 +--- a/configure.ac ++++ b/configure.ac +@@ -100,7 +100,7 @@ AC_CHECK_LIB(expat,XML_ParserCreate,[EXPAT_LIBS="-lexpat"], + [AC_MSG_ERROR([Can't find expat library. Please install expat.])]) + AC_SUBST(EXPAT_LIBS) + +-AC_CHECK_FUNCS(clearenv fdatasync) ++AC_CHECK_FUNCS(clearenv fdatasync setnetgrent) + + if test "x$GCC" = "xyes"; then + LDFLAGS="-Wl,--as-needed $LDFLAGS" +diff --git a/src/polkit/polkitidentity.c b/src/polkit/polkitidentity.c +index 3aa1f7f..10e9c17 100644 +--- a/src/polkit/polkitidentity.c ++++ b/src/polkit/polkitidentity.c +@@ -182,7 +182,15 @@ polkit_identity_from_string (const gchar *str, + } + else if (g_str_has_prefix (str, "unix-netgroup:")) + { ++#ifndef HAVE_SETNETGRENT ++ g_set_error (error, ++ POLKIT_ERROR, ++ POLKIT_ERROR_FAILED, ++ "Netgroups are not available on this machine ('%s')", ++ str); ++#else + identity = polkit_unix_netgroup_new (str + sizeof "unix-netgroup:" - 1); ++#endif + } + + if (identity == NULL && (error != NULL && *error == NULL)) +@@ -344,6 +352,13 @@ polkit_identity_new_for_gvariant (GVariant *variant, + GVariant *v; + const char *name; + ++#ifndef HAVE_SETNETGRENT ++ g_set_error (error, ++ POLKIT_ERROR, ++ POLKIT_ERROR_FAILED, ++ "Netgroups are not available on this machine"); ++ goto out; ++#else + v = lookup_asv (details_gvariant, "name", G_VARIANT_TYPE_STRING, error); + if (v == NULL) + { +@@ -353,6 +368,7 @@ polkit_identity_new_for_gvariant (GVariant *variant, + name = g_variant_get_string (v, NULL); + ret = polkit_unix_netgroup_new (name); + g_variant_unref (v); ++#endif + } + else + { +diff --git a/src/polkit/polkitunixnetgroup.c b/src/polkit/polkitunixnetgroup.c +index 8a2b369..83f8d4a 100644 +--- a/src/polkit/polkitunixnetgroup.c ++++ b/src/polkit/polkitunixnetgroup.c +@@ -194,6 +194,9 @@ polkit_unix_netgroup_set_name (PolkitUnixNetgroup *group, + PolkitIdentity * + polkit_unix_netgroup_new (const gchar *name) + { ++#ifndef HAVE_SETNETGRENT ++ g_assert_not_reached(); ++#endif + g_return_val_if_fail (name != NULL, NULL); + return POLKIT_IDENTITY (g_object_new (POLKIT_TYPE_UNIX_NETGROUP, + "name", name, +diff --git a/src/polkitbackend/polkitbackendinteractiveauthority.c b/src/polkitbackend/polkitbackendinteractiveauthority.c +index 056d9a8..36c2f3d 100644 +--- a/src/polkitbackend/polkitbackendinteractiveauthority.c ++++ b/src/polkitbackend/polkitbackendinteractiveauthority.c +@@ -2233,25 +2233,26 @@ get_users_in_net_group (PolkitIdentity *group, + GList *ret; + + ret = NULL; ++#ifdef HAVE_SETNETGRENT + name = polkit_unix_netgroup_get_name (POLKIT_UNIX_NETGROUP (group)); + +-#ifdef HAVE_SETNETGRENT_RETURN ++# ifdef HAVE_SETNETGRENT_RETURN + if (setnetgrent (name) == 0) + { + g_warning ("Error looking up net group with name %s: %s", name, g_strerror (errno)); + goto out; + } +-#else ++# else + setnetgrent (name); +-#endif ++# endif /* HAVE_SETNETGRENT_RETURN */ + + for (;;) + { +-#if defined(HAVE_NETBSD) || defined(HAVE_OPENBSD) ++# if defined(HAVE_NETBSD) || defined(HAVE_OPENBSD) + const char *hostname, *username, *domainname; +-#else ++# else + char *hostname, *username, *domainname; +-#endif ++# endif /* defined(HAVE_NETBSD) || defined(HAVE_OPENBSD) */ + PolkitIdentity *user; + GError *error = NULL; + +@@ -2282,6 +2283,7 @@ get_users_in_net_group (PolkitIdentity *group, + + out: + endnetgrent (); ++#endif /* HAVE_SETNETGRENT */ + return ret; + } + +diff --git a/src/polkitbackend/polkitbackendjsauthority.cpp b/src/polkitbackend/polkitbackendjsauthority.cpp +index ca17108..da95180 100644 +--- a/src/polkitbackend/polkitbackendjsauthority.cpp ++++ b/src/polkitbackend/polkitbackendjsauthority.cpp +@@ -1520,6 +1520,7 @@ js_polkit_user_is_in_netgroup (JSContext *cx, + + JS::CallArgs args = JS::CallArgsFromVp (argc, vp); + ++#ifdef HAVE_SETNETGRENT + JS::RootedString usrstr (authority->priv->cx); + usrstr = args[0].toString(); + user = JS_EncodeStringToUTF8 (cx, usrstr); +@@ -1534,6 +1535,7 @@ js_polkit_user_is_in_netgroup (JSContext *cx, + { + is_in_netgroup = true; + } ++ #endif + + ret = true; + +diff --git a/test/polkit/polkitidentitytest.c b/test/polkit/polkitidentitytest.c +index e91967b..e829aaa 100644 +--- a/test/polkit/polkitidentitytest.c ++++ b/test/polkit/polkitidentitytest.c +@@ -19,6 +19,7 @@ + * Author: Nikki VonHollen + */ + ++#include "config.h" + #include "glib.h" + #include + #include +@@ -145,11 +146,15 @@ struct ComparisonTestData comparison_test_data [] = { + {"unix-group:root", "unix-group:jane", FALSE}, + {"unix-group:jane", "unix-group:jane", TRUE}, + ++#ifdef HAVE_SETNETGRENT + {"unix-netgroup:foo", "unix-netgroup:foo", TRUE}, + {"unix-netgroup:foo", "unix-netgroup:bar", FALSE}, ++#endif + + {"unix-user:root", "unix-group:root", FALSE}, ++#ifdef HAVE_SETNETGRENT + {"unix-user:jane", "unix-netgroup:foo", FALSE}, ++#endif + + {NULL}, + }; +@@ -181,11 +186,13 @@ main (int argc, char *argv[]) + g_test_add_data_func ("/PolkitIdentity/group_string_2", "unix-group:jane", test_string); + g_test_add_data_func ("/PolkitIdentity/group_string_3", "unix-group:users", test_string); + ++#ifdef HAVE_SETNETGRENT + g_test_add_data_func ("/PolkitIdentity/netgroup_string", "unix-netgroup:foo", test_string); ++ g_test_add_data_func ("/PolkitIdentity/netgroup_gvariant", "unix-netgroup:foo", test_gvariant); ++#endif + + g_test_add_data_func ("/PolkitIdentity/user_gvariant", "unix-user:root", test_gvariant); + g_test_add_data_func ("/PolkitIdentity/group_gvariant", "unix-group:root", test_gvariant); +- g_test_add_data_func ("/PolkitIdentity/netgroup_gvariant", "unix-netgroup:foo", test_gvariant); + + add_comparison_tests (); + +diff --git a/test/polkit/polkitunixnetgrouptest.c b/test/polkit/polkitunixnetgrouptest.c +index 3701ba1..e3352eb 100644 +--- a/test/polkit/polkitunixnetgrouptest.c ++++ b/test/polkit/polkitunixnetgrouptest.c +@@ -19,6 +19,7 @@ + * Author: Nikki VonHollen + */ + ++#include "config.h" + #include "glib.h" + #include + #include +@@ -69,7 +70,9 @@ int + main (int argc, char *argv[]) + { + g_test_init (&argc, &argv, NULL); ++#ifdef HAVE_SETNETGRENT + g_test_add_func ("/PolkitUnixNetgroup/new", test_new); + g_test_add_func ("/PolkitUnixNetgroup/set_name", test_set_name); ++#endif + return g_test_run (); + } +diff --git a/test/polkitbackend/test-polkitbackendjsauthority.c b/test/polkitbackend/test-polkitbackendjsauthority.c +index f97e0e0..fc52149 100644 +--- a/test/polkitbackend/test-polkitbackendjsauthority.c ++++ b/test/polkitbackend/test-polkitbackendjsauthority.c +@@ -137,12 +137,14 @@ test_get_admin_identities (void) + "unix-group:users" + } + }, ++#ifdef HAVE_SETNETGRENT + { + "net.company.action3", + { + "unix-netgroup:foo" + } + }, ++#endif + }; + guint n; + -- cgit v1.2.1