forked from pool/grub2
be3181b1eb
- VUL-0: grub2,shim: implement new SBAT method (bsc#1182057) * 0031-util-mkimage-Remove-unused-code-to-add-BSS-section.patch * 0032-util-mkimage-Use-grub_host_to_target32-instead-of-gr.patch * 0033-util-mkimage-Always-use-grub_host_to_target32-to-ini.patch * 0034-util-mkimage-Unify-more-of-the-PE32-and-PE32-header-.patch * 0035-util-mkimage-Reorder-PE-optional-header-fields-set-u.patch * 0036-util-mkimage-Improve-data_size-value-calculation.patch * 0037-util-mkimage-Refactor-section-setup-to-use-a-helper.patch * 0038-util-mkimage-Add-an-option-to-import-SBAT-metadata-i.patch * 0039-grub-install-common-Add-sbat-option.patch - Fix CVE-2021-20225 (bsc#1182262) * 0022-lib-arg-Block-repeated-short-options-that-require-an.patch - Fix CVE-2020-27749 (bsc#1179264) * 0024-kern-parser-Fix-resource-leak-if-argc-0.patch * 0025-kern-parser-Fix-a-memory-leak.patch * 0026-kern-parser-Introduce-process_char-helper.patch * 0027-kern-parser-Introduce-terminate_arg-helper.patch * 0028-kern-parser-Refactor-grub_parser_split_cmdline-clean.patch * 0029-kern-buffer-Add-variable-sized-heap-buffer.patch * 0030-kern-parser-Fix-a-stack-buffer-overflow.patch - Fix CVE-2021-20233 (bsc#1182263) * 0023-commands-menuentry-Fix-quoting-in-setparams_prefix.patch - Fix CVE-2020-25647 (bsc#1177883) * 0021-usb-Avoid-possible-out-of-bound-accesses-caused-by-m.patch - Fix CVE-2020-25632 (bsc#1176711) * 0020-dl-Only-allow-unloading-modules-that-are-not-depende.patch - Fix CVE-2020-27779, CVE-2020-14372 (bsc#1179265) (bsc#1175970) * 0001-include-grub-i386-linux.h-Include-missing-grub-types.patch * 0002-efi-Make-shim_lock-GUID-and-protocol-type-public.patch * 0003-efi-Return-grub_efi_status_t-from-grub_efi_get_varia.patch OBS-URL: https://build.opensuse.org/request/show/876326 OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=374
62 lines
2.2 KiB
Diff
62 lines
2.2 KiB
Diff
From a4df9a0d74376aa4fc82f8c86c280cb087de01be Mon Sep 17 00:00:00 2001
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From: Javier Martinez Canillas <javierm@redhat.com>
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Date: Wed, 24 Feb 2021 15:03:26 +0100
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Subject: [PATCH 18/46] gdb: Restrict GDB access when locked down
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The gdbstub* commands allow to start and control a GDB stub running on
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local host that can be used to connect from a remote debugger. Restrict
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this functionality when the GRUB is locked down.
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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/gdb/gdb.c | 32 ++++++++++++++++++--------------
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1 file changed, 18 insertions(+), 14 deletions(-)
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diff --git a/grub-core/gdb/gdb.c b/grub-core/gdb/gdb.c
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index 847a1e1e3..1818cb6f8 100644
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--- a/grub-core/gdb/gdb.c
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+++ b/grub-core/gdb/gdb.c
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@@ -75,20 +75,24 @@ static grub_command_t cmd, cmd_stop, cmd_break;
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GRUB_MOD_INIT (gdb)
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{
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grub_gdb_idtinit ();
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- cmd = grub_register_command ("gdbstub", grub_cmd_gdbstub,
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- N_("PORT"),
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- /* TRANSLATORS: GDB stub is a small part of
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- GDB functionality running on local host
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- which allows remote debugger to
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- connect to it. */
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- N_("Start GDB stub on given port"));
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- cmd_break = grub_register_command ("gdbstub_break", grub_cmd_gdb_break,
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- /* TRANSLATORS: this refers to triggering
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- a breakpoint so that the user will land
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- into GDB. */
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- 0, N_("Break into GDB"));
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- cmd_stop = grub_register_command ("gdbstub_stop", grub_cmd_gdbstop,
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- 0, N_("Stop GDB stub"));
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+ cmd = grub_register_command_lockdown ("gdbstub", grub_cmd_gdbstub,
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+ N_("PORT"),
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+ /*
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+ * TRANSLATORS: GDB stub is a small part of
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+ * GDB functionality running on local host
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+ * which allows remote debugger to
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+ * connect to it.
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+ */
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+ N_("Start GDB stub on given port"));
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+ cmd_break = grub_register_command_lockdown ("gdbstub_break", grub_cmd_gdb_break,
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+ /*
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+ * TRANSLATORS: this refers to triggering
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+ * a breakpoint so that the user will land
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+ * into GDB.
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+ */
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+ 0, N_("Break into GDB"));
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+ cmd_stop = grub_register_command_lockdown ("gdbstub_stop", grub_cmd_gdbstop,
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+ 0, N_("Stop GDB stub"));
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}
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GRUB_MOD_FINI (gdb)
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--
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2.26.2
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