Bug 1215936 (CVE-2023-4693)

Summary: VUL-0: CVE-2023-4693: grub2: out-of-bounds read at fs/ntfs.c
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Bootloader Maintainers <bootloader-maintainers>
Status: RESOLVED FIXED QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P3 - Medium CC: abergmann, maint-coord, mchang, meissner, stoyan.manolov
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/380725/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-4693:5.5:(AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2023-10-04 09:12:37 UTC 
There an out-of-bounds read at fs/ntfs.c, a physically present attacker may leverage that by presenting a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack may allow sensitive data cached in memory or EFI variables values to be leaked presenting a high Confidentiality risk.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-4693
Comment 1 Michael Chang 2023-10-05 01:03:41 UTC 
The patch is also posted in grub-devel mailing list, [SECURITY PATCH 0/6] GRUB2 NTFS driver vulnerabilities - 2023/10/03

https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
Comment 2 Michael Chang 2023-10-05 01:05:24 UTC 
We don't use ntfs in our signed secure boot image.
Comment 6 Michael Chang 2023-10-11 10:01:21 UTC 
The submit request has been created:

SLE-15-SP5:Update : https://build.suse.de/request/show/310169
SLE-15-SP4:Update : https://build.suse.de/request/show/310170
SLE-15-SP3:Update : https://build.suse.de/request/show/310171
SLE-12-SP4:Update : https://build.suse.de/request/show/310172
SLE-12-SP3:Update : https://build.suse.de/request/show/310174
openSUSE: https://build.opensuse.org/request/show/1116881
Comment 8 Maintenance Automation 2023-10-16 12:30:08 UTC 
SUSE-SU-2023:4085-1: An update that solves two vulnerabilities and has two security fixes can now be installed.

Category: security (important)
Bug References: 1204563, 1215382, 1215935, 1215936
CVE References: CVE-2023-4692, CVE-2023-4693
Sources used:
SUSE Linux Enterprise High Performance Computing 12 SP5 (src): grub2-2.02-169.1
SUSE Linux Enterprise Server 12 SP5 (src): grub2-2.02-169.1
SUSE Linux Enterprise Server for SAP Applications 12 SP5 (src): grub2-2.02-169.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 9 Maintenance Automation 2023-10-19 08:54:43 UTC 
SUSE-SU-2023:4130-1: An update that solves two vulnerabilities can now be installed.

Category: security (important)
Bug References: 1215935, 1215936
CVE References: CVE-2023-4692, CVE-2023-4693
Sources used:
SUSE Manager Proxy 4.2 Module 4.2 (src): grub2-2.04-150300.22.43.1
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP3 (src): grub2-2.04-150300.22.43.1
SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (src): grub2-2.04-150300.22.43.1
SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3 (src): grub2-2.04-150300.22.43.1
SUSE Linux Enterprise Server for SAP Applications 15 SP3 (src): grub2-2.04-150300.22.43.1
SUSE Manager Proxy 4.2 (src): grub2-2.04-150300.22.43.1
SUSE Manager Retail Branch Server 4.2 (src): grub2-2.04-150300.22.43.1
SUSE Manager Server 4.2 (src): grub2-2.04-150300.22.43.1
SUSE Enterprise Storage 7.1 (src): grub2-2.04-150300.22.43.1
SUSE Linux Enterprise Micro 5.2 (src): grub2-2.04-150300.22.43.1
SUSE Linux Enterprise Micro for Rancher 5.2 (src): grub2-2.04-150300.22.43.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 10 Maintenance Automation 2023-10-20 12:30:17 UTC 
SUSE-SU-2023:4141-1: An update that solves two vulnerabilities and has one security fix can now be installed.

Category: security (important)
Bug References: 1201300, 1215935, 1215936
CVE References: CVE-2023-4692, CVE-2023-4693
Sources used:
SUSE Linux Enterprise Micro 5.5 (src): grub2-2.06-150500.29.8.1
Basesystem Module 15-SP5 (src): grub2-2.06-150500.29.8.1
Server Applications Module 15-SP5 (src): grub2-2.06-150500.29.8.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 11 Maintenance Automation 2023-10-20 12:30:20 UTC 
SUSE-SU-2023:4140-1: An update that solves two vulnerabilities and has one security fix can now be installed.

Category: security (important)
Bug References: 1201300, 1215935, 1215936
CVE References: CVE-2023-4692, CVE-2023-4693
Sources used:
SUSE Linux Enterprise Micro for Rancher 5.3 (src): grub2-2.06-150400.11.38.1
SUSE Linux Enterprise Micro 5.3 (src): grub2-2.06-150400.11.38.1
SUSE Linux Enterprise Micro for Rancher 5.4 (src): grub2-2.06-150400.11.38.1
SUSE Linux Enterprise Micro 5.4 (src): grub2-2.06-150400.11.38.1
Basesystem Module 15-SP4 (src): grub2-2.06-150400.11.38.1
Server Applications Module 15-SP4 (src): grub2-2.06-150400.11.38.1
SUSE Manager Proxy 4.3 Module 4.3 (src): grub2-2.06-150400.11.38.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.