Security update for grub2

Announcement ID: SUSE-SU-2022:2073-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2021-3695 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
  • CVE-2021-3695 ( NVD ): 4.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
  • CVE-2021-3696 ( SUSE ): 5.0 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
  • CVE-2021-3696 ( NVD ): 4.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
  • CVE-2021-3697 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
  • CVE-2021-3697 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-28733 ( SUSE ): 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE-2022-28733 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-28734 ( SUSE ): 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
  • CVE-2022-28734 ( NVD ): 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
  • CVE-2022-28735 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-28735 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-28736 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2022-28736 ( NVD ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Micro 5.1

An update that solves seven vulnerabilities and has 14 security fixes can now be installed.

Description:

This update for grub2 fixes the following issues:

Security fixes and hardenings for boothole 3 / boothole 2022 (bsc#1198581)

  • CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap (bsc#1191184)
  • CVE-2021-3696: Fixed that a crafted PNG image could lead to out-of-bound write during huffman table handling (bsc#1191185)
  • CVE-2021-3697: Fixed that a crafted JPEG image could lead to buffer underflow write in the heap (bsc#1191186)
  • CVE-2022-28733: Fixed fragmentation math in net/ip (bsc#1198460)
  • CVE-2022-28734: Fixed an out-of-bound write for split http headers (bsc#1198493)
  • CVE-2022-28735: Fixed some verifier framework changes (bsc#1198495)
  • CVE-2022-28736: Fixed a use-after-free in chainloader command (bsc#1198496)
  • Update SBAT security contact (bsc#1193282)
  • Bump grub's SBAT generation to 2

Other bugs fixed:

  • Use boot disks in OpenFirmware, fixing regression caused when the root LV is completely in the boot LUN (bsc#1197948)
  • Fix grub-install error when efi system partition is created as mdadm software raid1 device (bsc#1179981) (bsc#1195204)
  • Fix error in grub-install when linux root device is on lvm thin volume (bsc#1192622) (bsc#1191974)
  • Fix wrong default entry when booting snapshot (bsc#1159205)
  • Add support for simplefb (boo#1193532).
  • Fix error lvmid disk cannot be found after second disk added to the root volume group (bsc#1189874) (bsc#1071559)
  • Fix error /boot/grub2/locale/POSIX.gmo not found (bsc#1189769)
  • Fix unknown TPM error on buggy uefi firmware (bsc#1191504)
  • Fix arm64 kernel image not aligned on 64k boundary (bsc#1192522)

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 Micro 5.1
    zypper in -t patch SUSE-SUSE-MicroOS-5.1-2022-2073=1

Package List:

  • SUSE Linux Enterprise Micro 5.1 (aarch64 s390x x86_64)
    • grub2-2.04-150300.3.5.1
    • grub2-debuginfo-2.04-150300.3.5.1
    • grub2-debugsource-2.04-150300.3.5.1
  • SUSE Linux Enterprise Micro 5.1 (noarch)
    • grub2-i386-pc-2.04-150300.3.5.1
    • grub2-x86_64-efi-2.04-150300.3.5.1
    • grub2-arm64-efi-2.04-150300.3.5.1
    • grub2-x86_64-xen-2.04-150300.3.5.1
    • grub2-snapper-plugin-2.04-150300.3.5.1
  • SUSE Linux Enterprise Micro 5.1 (s390x)
    • grub2-s390x-emu-2.04-150300.3.5.1

References: