Security update for grub2

Announcement ID:	SUSE-SU-2021:0679-1
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 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP3 SUSE Linux Enterprise High Performance Computing 12 SP4 SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP5 SUSE OpenStack Cloud 7

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)

grub2 was bumped to version 2.02, same as SUSE Linux Enterprise 12 SP3.

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 OpenStack Cloud 7
  zypper in -t patch SUSE-OpenStack-Cloud-7-2021-679=1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2
  zypper in -t patch SUSE-SLE-POS-12-SP2-CLIENT-2021-679=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-SAP-12-SP2-2021-679=1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2021-679=1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-ESPOS-2021-679=1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2021-679=1

Package List:

• SUSE OpenStack Cloud 7 (x86_64)
  • grub2-x86_64-efi-2.02-115.59.1
  • grub2-2.02-115.59.1
  • grub2-debuginfo-2.02-115.59.1
  • grub2-i386-pc-2.02-115.59.1
  • grub2-x86_64-xen-2.02-115.59.1
  • grub2-debugsource-2.02-115.59.1
• SUSE OpenStack Cloud 7 (noarch)
  • grub2-snapper-plugin-2.02-115.59.1
  • grub2-systemd-sleep-plugin-2.02-115.59.1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 (x86_64)
  • grub2-x86_64-efi-2.02-115.59.1
  • grub2-2.02-115.59.1
  • grub2-debuginfo-2.02-115.59.1
  • grub2-i386-pc-2.02-115.59.1
  • grub2-x86_64-xen-2.02-115.59.1
  • grub2-debugsource-2.02-115.59.1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 (noarch)
  • grub2-snapper-plugin-2.02-115.59.1
  • grub2-systemd-sleep-plugin-2.02-115.59.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (ppc64le x86_64)
  • grub2-debuginfo-2.02-115.59.1
  • grub2-2.02-115.59.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (ppc64le)
  • grub2-powerpc-ieee1275-2.02-115.59.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (noarch)
  • grub2-snapper-plugin-2.02-115.59.1
  • grub2-systemd-sleep-plugin-2.02-115.59.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (x86_64)
  • grub2-x86_64-xen-2.02-115.59.1
  • grub2-x86_64-efi-2.02-115.59.1
  • grub2-debugsource-2.02-115.59.1
  • grub2-i386-pc-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (x86_64)
  • grub2-x86_64-efi-2.02-115.59.1
  • grub2-2.02-115.59.1
  • grub2-debuginfo-2.02-115.59.1
  • grub2-i386-pc-2.02-115.59.1
  • grub2-x86_64-xen-2.02-115.59.1
  • grub2-debugsource-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (noarch)
  • grub2-snapper-plugin-2.02-115.59.1
  • grub2-systemd-sleep-plugin-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (x86_64)
  • grub2-x86_64-efi-2.02-115.59.1
  • grub2-2.02-115.59.1
  • grub2-debuginfo-2.02-115.59.1
  • grub2-i386-pc-2.02-115.59.1
  • grub2-x86_64-xen-2.02-115.59.1
  • grub2-debugsource-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (noarch)
  • grub2-snapper-plugin-2.02-115.59.1
  • grub2-systemd-sleep-plugin-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (ppc64le s390x x86_64)
  • grub2-debuginfo-2.02-115.59.1
  • grub2-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (ppc64le)
  • grub2-powerpc-ieee1275-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (noarch)
  • grub2-snapper-plugin-2.02-115.59.1
  • grub2-systemd-sleep-plugin-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (s390x x86_64)
  • grub2-debugsource-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (s390x)
  • grub2-s390x-emu-2.02-115.59.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (x86_64)
  • grub2-x86_64-xen-2.02-115.59.1
  • grub2-x86_64-efi-2.02-115.59.1
  • grub2-i386-pc-2.02-115.59.1

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