SUSE Security Update: Security update for grub2
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:0685-1
Rating:             important
References:         #1175970 #1176711 #1177883 #1179264 #1179265 
                    #1182057 #1182262 #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-2020-25632 (SUSE): 7.5
 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
                    CVE-2020-25647 (SUSE): 7.6
 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
                    CVE-2020-27749 (SUSE): 7.5
 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
                    CVE-2020-27779 (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 (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 (SUSE): 7.5
 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Server for SAP 15
                    SUSE Linux Enterprise Server 15-LTSS
                    SUSE Linux Enterprise High Performance Computing 15-LTSS
                    SUSE Linux Enterprise High Performance Computing 15-ESPOS
______________________________________________________________________________

   An update that solves 7 vulnerabilities and has one errata
   is now available.

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 Security 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 for SAP 15:

      zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-2021-685=1

   - SUSE Linux Enterprise Server 15-LTSS:

      zypper in -t patch SUSE-SLE-Product-SLES-15-2021-685=1

   - SUSE Linux Enterprise High Performance Computing 15-LTSS:

      zypper in -t patch SUSE-SLE-Product-HPC-15-2021-685=1

   - SUSE Linux Enterprise High Performance Computing 15-ESPOS:

      zypper in -t patch SUSE-SLE-Product-HPC-15-2021-685=1



Package List:

   - SUSE Linux Enterprise Server for SAP 15 (ppc64le x86_64):

      grub2-2.02-19.66.1
      grub2-debuginfo-2.02-19.66.1

   - SUSE Linux Enterprise Server for SAP 15 (ppc64le):

      grub2-powerpc-ieee1275-2.02-19.66.1

   - SUSE Linux Enterprise Server for SAP 15 (noarch):

      grub2-snapper-plugin-2.02-19.66.1
      grub2-systemd-sleep-plugin-2.02-19.66.1

   - SUSE Linux Enterprise Server for SAP 15 (x86_64):

      grub2-debugsource-2.02-19.66.1
      grub2-i386-pc-2.02-19.66.1
      grub2-x86_64-efi-2.02-19.66.1
      grub2-x86_64-xen-2.02-19.66.1

   - SUSE Linux Enterprise Server 15-LTSS (aarch64 s390x):

      grub2-2.02-19.66.1
      grub2-debuginfo-2.02-19.66.1
      grub2-debugsource-2.02-19.66.1

   - SUSE Linux Enterprise Server 15-LTSS (aarch64):

      grub2-arm64-efi-2.02-19.66.1

   - SUSE Linux Enterprise Server 15-LTSS (noarch):

      grub2-snapper-plugin-2.02-19.66.1
      grub2-systemd-sleep-plugin-2.02-19.66.1

   - SUSE Linux Enterprise Server 15-LTSS (s390x):

      grub2-s390x-emu-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-LTSS (aarch64 x86_64):

      grub2-2.02-19.66.1
      grub2-debuginfo-2.02-19.66.1
      grub2-debugsource-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-LTSS (aarch64):

      grub2-arm64-efi-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-LTSS (noarch):

      grub2-snapper-plugin-2.02-19.66.1
      grub2-systemd-sleep-plugin-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-LTSS (x86_64):

      grub2-i386-pc-2.02-19.66.1
      grub2-x86_64-efi-2.02-19.66.1
      grub2-x86_64-xen-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-ESPOS (aarch64
 x86_64):

      grub2-2.02-19.66.1
      grub2-debuginfo-2.02-19.66.1
      grub2-debugsource-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-ESPOS (aarch64):

      grub2-arm64-efi-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-ESPOS (x86_64):

      grub2-i386-pc-2.02-19.66.1
      grub2-x86_64-efi-2.02-19.66.1
      grub2-x86_64-xen-2.02-19.66.1

   - SUSE Linux Enterprise High Performance Computing 15-ESPOS (noarch):

      grub2-snapper-plugin-2.02-19.66.1
      grub2-systemd-sleep-plugin-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/1175970
   https://bugzilla.suse.com/1176711
   https://bugzilla.suse.com/1177883
   https://bugzilla.suse.com/1179264
   https://bugzilla.suse.com/1179265
   https://bugzilla.suse.com/1182057
   https://bugzilla.suse.com/1182262
   https://bugzilla.suse.com/1182263