Out-of-bounds write in grub - CVE-2023-4692

Vulnerability identifier: #VU81627

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2023-4692

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

Affected software:
grub
Gentoo Linux
Debian Linux
Amazon Linux AMI
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy Module
SUSE Manager Proxy
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Enterprise Storage
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
SUSE Linux Enterprise Server 15 SP3 LTSS
Basesystem Module
Server Applications Module
openEuler
Ubuntu
Fedora
RecoverPoint for Virtual Machines
IBM Qradar SIEM
Juniper Secure Analytics (JSA)
Dell EMC NetWorker vProxy
SmartFabric OS10
ObjectScale
EMC ECS
Enterprise SONiC
grub-efi-amd64-signed (Ubuntu package)
grub-efi-arm64-signed (Ubuntu package)
grub2-common
grub2-efi-x64
grub2-efi-x64-cdboot
grub2-pc
grub2-tools-efi
grub2-efi-loongarch64
grub2-efi-aa64-modules
grub2-efi-ia32-modules
grub2-efi-x64-modules
grub2-pc-modules
grub2-efi-ia32-cdboot
grub2-efi-loongarch64-cdboot
grub2-efi-aa64
grub2-efi-ia32
grub2-tools-minimal
grub2-tools-extra
grub2-tools
grub2-efi-aa64-cdboot
grub2 (Red Hat package)
grub2-snapper-plugin
grub2-s390x-emu
grub2-powerpc-ieee1275
grub2-i386-pc
grub2-x86_64-efi
grub2-x86_64-xen
grub2-systemd-sleep-plugin
grub2-arm64-efi
grub2-debugsource
grub2
grub2-debuginfo
grub2-help
sys-boot/grub
grub-efi-arm64-bin (Ubuntu package)
grub-efi-arm64 (Ubuntu package)
grub-efi-amd64-bin (Ubuntu package)
grub-efi-amd64 (Ubuntu package)
grub2 (Debian package)
OpenShift Service Mesh
RecoverPoint for VMs
Dell EMC VxRail Appliance

The vulnerability allows a local user to bypass secure boot protection.

The vulnerability exists due to a boundary error in NTFS driver implementation in grub-core/fs/ntfs.c when parsing the $ATTRIBUTE_LIST attribute for the $MFT file. A local user can pass a specially crafted image to the application, trigger an out-of-bounds write and bypass secure boot protection.

Install updates from vendor's website.

• https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html