Security update for grub2

Announcement ID:	SUSE-SU-2021:0685-1
Rating:	important
References:	bsc#1175970 bsc#1176711 bsc#1177883 bsc#1179264 bsc#1179265 bsc#1182057 bsc#1182262 bsc#1182263
Cross-References:	CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233
CVSS scores:	CVE-2020-14372 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-14372 ( NVD ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-25632 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-25632 ( NVD ): 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-25647 ( SUSE ): 7.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2020-25647 ( NVD ): 7.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVE-2020-27749 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-27749 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-27779 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2020-27779 ( NVD ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2021-20225 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2021-20225 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2021-20233 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H CVE-2021-20233 ( NVD ): 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected Products:	SUSE Linux Enterprise High Performance Computing 15 SUSE Linux Enterprise High Performance Computing 15 LTSS 15 SUSE Linux Enterprise Server 15 SUSE Linux Enterprise Server 15 LTSS 15 SUSE Linux Enterprise Server ESPOS 15 SUSE Linux Enterprise Server for SAP Applications 15

An update that solves seven vulnerabilities and has one security fix can now be installed.

Description:

This update for grub2 fixes the following issues:

grub2 now implements the new "SBAT" method for SHIM based secure boot revocation. (bsc#1182057)

Following security issues are fixed that can violate secure boot constraints:

• CVE-2020-25632: Fixed a use-after-free in rmmod command (bsc#1176711)
• CVE-2020-25647: Fixed an out-of-bound write in grub_usb_device_initialize() (bsc#1177883)
• CVE-2020-27749: Fixed a stack buffer overflow in grub_parser_split_cmdline (bsc#1179264)
• CVE-2020-27779, CVE-2020-14372: Disallow cutmem and acpi commands in secure boot mode (bsc#1179265 bsc#1175970)
• CVE-2021-20225: Fixed a heap out-of-bounds write in short form option parser (bsc#1182262)
• CVE-2021-20233: Fixed a heap out-of-bound write due to mis-calculation of space required for quoting (bsc#1182263)

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Server ESPOS 15
  zypper in -t patch SUSE-SLE-Product-HPC-15-2021-685=1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15
  zypper in -t patch SUSE-SLE-Product-HPC-15-2021-685=1
• SUSE Linux Enterprise Server 15 LTSS 15
  zypper in -t patch SUSE-SLE-Product-SLES-15-2021-685=1
• SUSE Linux Enterprise Server for SAP Applications 15
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2021-685=1

Package List:

• SUSE Linux Enterprise Server ESPOS 15 (aarch64 x86_64)
  • grub2-debuginfo-2.02-19.66.1
  • grub2-debugsource-2.02-19.66.1
  • grub2-2.02-19.66.1
• SUSE Linux Enterprise Server ESPOS 15 (aarch64)
  • grub2-arm64-efi-2.02-19.66.1
• SUSE Linux Enterprise Server ESPOS 15 (noarch)
  • grub2-systemd-sleep-plugin-2.02-19.66.1
  • grub2-snapper-plugin-2.02-19.66.1
• SUSE Linux Enterprise Server ESPOS 15 (x86_64)
  • grub2-x86_64-efi-2.02-19.66.1
  • grub2-x86_64-xen-2.02-19.66.1
  • grub2-i386-pc-2.02-19.66.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (aarch64 x86_64)
  • grub2-debuginfo-2.02-19.66.1
  • grub2-debugsource-2.02-19.66.1
  • grub2-2.02-19.66.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (aarch64)
  • grub2-arm64-efi-2.02-19.66.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (noarch)
  • grub2-systemd-sleep-plugin-2.02-19.66.1
  • grub2-snapper-plugin-2.02-19.66.1
• SUSE Linux Enterprise High Performance Computing 15 LTSS 15 (x86_64)
  • grub2-x86_64-efi-2.02-19.66.1
  • grub2-x86_64-xen-2.02-19.66.1
  • grub2-i386-pc-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (aarch64 ppc64le s390x x86_64)
  • grub2-debuginfo-2.02-19.66.1
  • grub2-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (aarch64)
  • grub2-arm64-efi-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (aarch64 s390x x86_64)
  • grub2-debugsource-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (noarch)
  • grub2-systemd-sleep-plugin-2.02-19.66.1
  • grub2-snapper-plugin-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (ppc64le)
  • grub2-powerpc-ieee1275-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (s390x)
  • grub2-s390x-emu-2.02-19.66.1
• SUSE Linux Enterprise Server 15 LTSS 15 (x86_64)
  • grub2-x86_64-efi-2.02-19.66.1
  • grub2-x86_64-xen-2.02-19.66.1
  • grub2-i386-pc-2.02-19.66.1
• SUSE Linux Enterprise Server for SAP Applications 15 (ppc64le x86_64)
  • grub2-debuginfo-2.02-19.66.1
  • grub2-2.02-19.66.1
• SUSE Linux Enterprise Server for SAP Applications 15 (ppc64le)
  • grub2-powerpc-ieee1275-2.02-19.66.1
• SUSE Linux Enterprise Server for SAP Applications 15 (noarch)
  • grub2-systemd-sleep-plugin-2.02-19.66.1
  • grub2-snapper-plugin-2.02-19.66.1
• SUSE Linux Enterprise Server for SAP Applications 15 (x86_64)
  • grub2-x86_64-efi-2.02-19.66.1
  • grub2-x86_64-xen-2.02-19.66.1
  • grub2-debugsource-2.02-19.66.1
  • grub2-i386-pc-2.02-19.66.1

References:

• https://www.suse.com/security/cve/CVE-2020-14372.html
• https://www.suse.com/security/cve/CVE-2020-25632.html
• https://www.suse.com/security/cve/CVE-2020-25647.html
• https://www.suse.com/security/cve/CVE-2020-27749.html
• https://www.suse.com/security/cve/CVE-2020-27779.html
• https://www.suse.com/security/cve/CVE-2021-20225.html
• https://www.suse.com/security/cve/CVE-2021-20233.html
• https://bugzilla.suse.com/show_bug.cgi?id=1175970
• https://bugzilla.suse.com/show_bug.cgi?id=1176711
• https://bugzilla.suse.com/show_bug.cgi?id=1177883
• https://bugzilla.suse.com/show_bug.cgi?id=1179264
• https://bugzilla.suse.com/show_bug.cgi?id=1179265
• https://bugzilla.suse.com/show_bug.cgi?id=1182057
• https://bugzilla.suse.com/show_bug.cgi?id=1182262
• https://bugzilla.suse.com/show_bug.cgi?id=1182263