# Security update for grub2

Announcement ID: SUSE-SU-2023:4085-1  
Rating: important  
References:

  * #1204563
  * #1215382
  * #1215935
  * #1215936

  
Cross-References:

  * CVE-2023-4692
  * CVE-2023-4693

  
CVSS scores:

  * CVE-2023-4692 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-4693 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

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

## Description:

This update for grub2 fixes the following issues:

Security fixes: \- CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c
which may lead to unsigned code execution. (bsc#1215935) \- CVE-2023-4693: Fixed
an out-of-bounds read at fs/ntfs.c which may lead to leak sensitive information.
(bsc#1215936)

Other fixes: \- Fix 'command not found' error of grub2-once (bsc#1204563,
bsc#1215382)

## 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 High Performance Computing 12 SP5  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2023-4085=1

  * SUSE Linux Enterprise Server 12 SP5  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2023-4085=1

  * SUSE Linux Enterprise Server for SAP Applications 12 SP5  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2023-4085=1

## Package List:

  * SUSE Linux Enterprise High Performance Computing 12 SP5 (aarch64 x86_64)
    * grub2-debuginfo-2.02-169.1
    * grub2-2.02-169.1
    * grub2-debugsource-2.02-169.1
  * SUSE Linux Enterprise High Performance Computing 12 SP5 (aarch64)
    * grub2-arm64-efi-2.02-169.1
  * SUSE Linux Enterprise High Performance Computing 12 SP5 (noarch)
    * grub2-systemd-sleep-plugin-2.02-169.1
    * grub2-snapper-plugin-2.02-169.1
    * grub2-x86_64-xen-2.02-169.1
  * SUSE Linux Enterprise High Performance Computing 12 SP5 (x86_64)
    * grub2-x86_64-efi-2.02-169.1
    * grub2-i386-pc-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (aarch64 ppc64le s390x x86_64)
    * grub2-debuginfo-2.02-169.1
    * grub2-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (aarch64)
    * grub2-arm64-efi-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (aarch64 s390x x86_64)
    * grub2-debugsource-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (noarch)
    * grub2-systemd-sleep-plugin-2.02-169.1
    * grub2-snapper-plugin-2.02-169.1
    * grub2-x86_64-xen-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (ppc64le)
    * grub2-powerpc-ieee1275-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (s390x)
    * grub2-s390x-emu-2.02-169.1
  * SUSE Linux Enterprise Server 12 SP5 (x86_64)
    * grub2-x86_64-efi-2.02-169.1
    * grub2-i386-pc-2.02-169.1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5 (ppc64le x86_64)
    * grub2-debuginfo-2.02-169.1
    * grub2-2.02-169.1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5 (ppc64le)
    * grub2-powerpc-ieee1275-2.02-169.1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5 (noarch)
    * grub2-systemd-sleep-plugin-2.02-169.1
    * grub2-snapper-plugin-2.02-169.1
    * grub2-x86_64-xen-2.02-169.1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5 (x86_64)
    * grub2-x86_64-efi-2.02-169.1
    * grub2-debugsource-2.02-169.1
    * grub2-i386-pc-2.02-169.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-4692.html
  * https://www.suse.com/security/cve/CVE-2023-4693.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1204563
  * https://bugzilla.suse.com/show_bug.cgi?id=1215382
  * https://bugzilla.suse.com/show_bug.cgi?id=1215935
  * https://bugzilla.suse.com/show_bug.cgi?id=1215936