SUSE update for grub2
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-4692 CVE-2023-4693 |
| CWE-ID | CWE-787 CWE-125 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Server for SAP Applications 12 Operating systems & Components / Operating system SUSE Linux Enterprise Server 12 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 12 Operating systems & Components / Operating system grub2-s390x-emu Operating systems & Components / Operating system package or component grub2-powerpc-ieee1275 Operating systems & Components / Operating system package or component grub2-i386-pc Operating systems & Components / Operating system package or component grub2-x86_64-efi Operating systems & Components / Operating system package or component grub2-x86_64-xen Operating systems & Components / Operating system package or component grub2-snapper-plugin Operating systems & Components / Operating system package or component grub2-systemd-sleep-plugin Operating systems & Components / Operating system package or component grub2-arm64-efi Operating systems & Components / Operating system package or component grub2-debugsource Operating systems & Components / Operating system package or component grub2 Operating systems & Components / Operating system package or component grub2-debuginfo Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds write
EUVDB-ID: #VU81627
Risk: Low
CVSSv4.0: 5.9 [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 - Out-of-bounds write
Exploit availability: No
DescriptionThe 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.
MitigationUpdate the affected package grub2 to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications 12: SP5
SUSE Linux Enterprise Server 12: SP5
SUSE Linux Enterprise High Performance Computing 12: SP5
grub2-s390x-emu: before 2.02-169.1
grub2-powerpc-ieee1275: before 2.02-169.1
grub2-i386-pc: before 2.02-169.1
grub2-x86_64-efi: before 2.02-169.1
grub2-x86_64-xen: before 2.02-169.1
grub2-snapper-plugin: before 2.02-169.1
grub2-systemd-sleep-plugin: before 2.02-169.1
grub2-arm64-efi: before 2.02-169.1
grub2-debugsource: before 2.02-169.1
grub2: before 2.02-169.1
grub2-debuginfo: before 2.02-169.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:grub2-s390x-emu:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-powerpc-ieee1275:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-i386-pc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-x86_64-efi:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-x86_64-xen:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-snapper-plugin:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-systemd-sleep-plugin:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-arm64-efi:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debuginfo:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2023/suse-su-20234085-1/
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Out-of-bounds read
EUVDB-ID: #VU81628
Risk: Low
CVSSv4.0: 1.7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-4693
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows an attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the NTFS driver in grub-core/fs/ntfs.c when reading data from the resident $DATA attribute. A attacker with physical access to the system use a specially crafted NTFS file system image to read arbitrary memory locations, such as data cached in memory or EFI variables values.
Update the affected package grub2 to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server for SAP Applications 12: SP5
SUSE Linux Enterprise Server 12: SP5
SUSE Linux Enterprise High Performance Computing 12: SP5
grub2-s390x-emu: before 2.02-169.1
grub2-powerpc-ieee1275: before 2.02-169.1
grub2-i386-pc: before 2.02-169.1
grub2-x86_64-efi: before 2.02-169.1
grub2-x86_64-xen: before 2.02-169.1
grub2-snapper-plugin: before 2.02-169.1
grub2-systemd-sleep-plugin: before 2.02-169.1
grub2-arm64-efi: before 2.02-169.1
grub2-debugsource: before 2.02-169.1
grub2: before 2.02-169.1
grub2-debuginfo: before 2.02-169.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP5:*:*:*:*:*:*:*
- cpe:2.3:o:suse:grub2-s390x-emu:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-powerpc-ieee1275:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-i386-pc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-x86_64-efi:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-x86_64-xen:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-snapper-plugin:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-systemd-sleep-plugin:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-arm64-efi:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debuginfo:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2023/suse-su-20234085-1/
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
