diff options
Diffstat (limited to 'meta-oe/recipes-extended/polkit')
4 files changed, 197 insertions, 0 deletions
diff --git a/meta-oe/recipes-extended/polkit/files/CVE-2021-4034.patch b/meta-oe/recipes-extended/polkit/files/CVE-2021-4034.patch new file mode 100644 index 0000000000..cab1c83c09 --- /dev/null +++ b/meta-oe/recipes-extended/polkit/files/CVE-2021-4034.patch @@ -0,0 +1,74 @@ +From ed8b418f1341cf7fc576f6b17de5c6dd4017e034 Mon Sep 17 00:00:00 2001 +From: "Jeremy A. Puhlman" <jpuhlman@mvista.com> +Date: Thu, 27 Jan 2022 00:01:27 +0000 +Subject: [PATCH] CVE-2021-4034: Local privilege escalation in pkexec due to + incorrect handling of argument vector + +Upstream-Status: Backport https://gitlab.freedesktop.org/polkit/polkit/-/commit/a2bf5c9c83b6ae46cbd5c779d3055bff81ded683 +CVE: CVE-2021-4034 + +Signed-off-by: Jeremy A. Puhlman <jpuhlman@mvista.com> +--- + src/programs/pkcheck.c | 6 ++++++ + src/programs/pkexec.c | 21 ++++++++++++++++++++- + 2 files changed, 26 insertions(+), 1 deletion(-) + +diff --git a/src/programs/pkcheck.c b/src/programs/pkcheck.c +index f1bb4e1..aff4f60 100644 +--- a/src/programs/pkcheck.c ++++ b/src/programs/pkcheck.c +@@ -363,6 +363,12 @@ main (int argc, char *argv[]) + local_agent_handle = NULL; + ret = 126; + ++ if (argc < 1) ++ { ++ help(); ++ exit(1); ++ } ++ + /* 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..3ff4c58 100644 +--- a/src/programs/pkexec.c ++++ b/src/programs/pkexec.c +@@ -488,6 +488,17 @@ main (int argc, char *argv[]) + pid_t pid_of_caller; + gpointer local_agent_handle; + ++ ++ /* ++ * If 'pkexec' is called wrong, just show help and bail out. ++ */ ++ if (argc<1) ++ { ++ clearenv(); ++ usage(argc, argv); ++ exit(1); ++ } ++ + ret = 127; + authority = NULL; + subject = NULL; +@@ -636,7 +647,15 @@ 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) + { +-- +2.26.2 + diff --git a/meta-oe/recipes-extended/polkit/files/CVE-2021-4115.patch b/meta-oe/recipes-extended/polkit/files/CVE-2021-4115.patch new file mode 100644 index 0000000000..37e0d6063c --- /dev/null +++ b/meta-oe/recipes-extended/polkit/files/CVE-2021-4115.patch @@ -0,0 +1,87 @@ +From 41cb093f554da8772362654a128a84dd8a5542a7 Mon Sep 17 00:00:00 2001 +From: Jan Rybar <jrybar@redhat.com> +Date: Mon, 21 Feb 2022 08:29:05 +0000 +Subject: [PATCH] CVE-2021-4115 (GHSL-2021-077) fix + +Upstream-Status: Backport [https://gitlab.freedesktop.org/polkit/polkit/-/commit/41cb093f554da8772362654a128a84dd8a5542a7.patch] +CVE: CVE-2021-4115 +Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com> + +--- + src/polkit/polkitsystembusname.c | 38 ++++++++++++++++++++++++++++---- + 1 file changed, 34 insertions(+), 4 deletions(-) + +diff --git a/src/polkit/polkitsystembusname.c b/src/polkit/polkitsystembusname.c +index 8ed1363..2fbf5f1 100644 +--- a/src/polkit/polkitsystembusname.c ++++ b/src/polkit/polkitsystembusname.c +@@ -62,6 +62,10 @@ enum + PROP_NAME, + }; + ++ ++guint8 dbus_call_respond_fails; // has to be global because of callback ++ ++ + static void subject_iface_init (PolkitSubjectIface *subject_iface); + + G_DEFINE_TYPE_WITH_CODE (PolkitSystemBusName, polkit_system_bus_name, G_TYPE_OBJECT, +@@ -364,6 +368,7 @@ on_retrieved_unix_uid_pid (GObject *src, + if (!v) + { + data->caught_error = TRUE; ++ dbus_call_respond_fails += 1; + } + else + { +@@ -405,6 +410,8 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName *system_bus + tmp_context = g_main_context_new (); + g_main_context_push_thread_default (tmp_context); + ++ dbus_call_respond_fails = 0; ++ + /* Do two async calls as it's basically as fast as one sync call. + */ + g_dbus_connection_call (connection, +@@ -432,11 +439,34 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName *system_bus + on_retrieved_unix_uid_pid, + &data); + +- while (!((data.retrieved_uid && data.retrieved_pid) || data.caught_error)) +- g_main_context_iteration (tmp_context, TRUE); ++ while (TRUE) ++ { ++ /* If one dbus call returns error, we must wait until the other call ++ * calls _call_finish(), otherwise fd leak is possible. ++ * Resolves: GHSL-2021-077 ++ */ + +- if (data.caught_error) +- goto out; ++ if ( (dbus_call_respond_fails > 1) ) ++ { ++ // we got two faults, we can leave ++ goto out; ++ } ++ ++ if ((data.caught_error && (data.retrieved_pid || data.retrieved_uid))) ++ { ++ // we got one fault and the other call finally finished, we can leave ++ goto out; ++ } ++ ++ if ( !(data.retrieved_uid && data.retrieved_pid) ) ++ { ++ g_main_context_iteration (tmp_context, TRUE); ++ } ++ else ++ { ++ break; ++ } ++ } + + if (out_uid) + *out_uid = data.uid; +-- +GitLab + diff --git a/meta-oe/recipes-extended/polkit/polkit/CVE-2021-3560.patch b/meta-oe/recipes-extended/polkit/polkit/CVE-2021-3560.patch new file mode 100644 index 0000000000..76308ffdb9 --- /dev/null +++ b/meta-oe/recipes-extended/polkit/polkit/CVE-2021-3560.patch @@ -0,0 +1,33 @@ +From a04d13affe0fa53ff618e07aa8f57f4c0e3b9b81 Mon Sep 17 00:00:00 2001 +From: Jan Rybar <jrybar@redhat.com> +Date: Wed, 2 Jun 2021 15:43:38 +0200 +Subject: [PATCH] GHSL-2021-074: authentication bypass vulnerability in polkit + +initial values returned if error caught + +CVE: CVE-2021-3560 + +Upstream-Status: Backport [https://gitlab.freedesktop.org/polkit/polkit/-/commit/a04d13affe0fa53ff618e07aa8f57f4c0e3b9b81] + +Signed-off-by: Mingli Yu <mingli.yu@windriver.com> +--- + src/polkit/polkitsystembusname.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/src/polkit/polkitsystembusname.c b/src/polkit/polkitsystembusname.c +index 8daa12c..8ed1363 100644 +--- a/src/polkit/polkitsystembusname.c ++++ b/src/polkit/polkitsystembusname.c +@@ -435,6 +435,9 @@ polkit_system_bus_name_get_creds_sync (PolkitSystemBusName *system_bus + while (!((data.retrieved_uid && data.retrieved_pid) || data.caught_error)) + g_main_context_iteration (tmp_context, TRUE); + ++ if (data.caught_error) ++ goto out; ++ + if (out_uid) + *out_uid = data.uid; + if (out_pid) +-- +2.29.2 + diff --git a/meta-oe/recipes-extended/polkit/polkit_0.116.bb b/meta-oe/recipes-extended/polkit/polkit_0.116.bb index ad1973b136..dd8e208616 100644 --- a/meta-oe/recipes-extended/polkit/polkit_0.116.bb +++ b/meta-oe/recipes-extended/polkit/polkit_0.116.bb @@ -25,6 +25,9 @@ PAM_SRC_URI = "file://polkit-1_pam.patch" SRC_URI = "http://www.freedesktop.org/software/polkit/releases/polkit-${PV}.tar.gz \ ${@bb.utils.contains('DISTRO_FEATURES', 'pam', '${PAM_SRC_URI}', '', d)} \ file://0003-make-netgroup-support-optional.patch \ + file://CVE-2021-3560.patch \ + file://CVE-2021-4034.patch \ + file://CVE-2021-4115.patch \ " SRC_URI[md5sum] = "4b37258583393e83069a0e2e89c0162a" SRC_URI[sha256sum] = "88170c9e711e8db305a12fdb8234fac5706c61969b94e084d0f117d8ec5d34b1" |