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Bug 2238343 (CVE-2023-4693) - CVE-2023-4693 grub2: out-of-bounds read at fs/ntfs.c
Summary: CVE-2023-4693 grub2: out-of-bounds read at fs/ntfs.c
Keywords:
Status: NEW
Alias: CVE-2023-4693
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2241976
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-09-11 14:47 UTC by Marco Benatto
Modified: 2024-04-30 10:54 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:2456 0 None None None 2024-04-30 10:54:10 UTC

Description Marco Benatto 2023-09-11 14:47:13 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.
Comment 2 Marco Benatto 2023-10-03 17:54:47 UTC 
Created grub2 tracking bugs for this issue:

Affects: fedora-all [bug 2241976]
Comment 3 Marco Benatto 2023-10-03 18:15:28 UTC 
Upstream patch for this issue:
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00030.html
Comment 4 Marta Lewandowska 2024-03-25 08:28:52 UTC 
This is duplicating https://issues.redhat.com/browse/RHEL-11569 which is now set to RELEASE PENDING. I believe this can be closed.
Comment 5 errata-xmlrpc 2024-04-30 10:54:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:2456 https://access.redhat.com/errata/RHSA-2024:2456
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