Medium [CVE-2023-4693] out-of-bounds read at fs/ntfs.c
This medium-severity Red Hat Linux advisory covers CVE-2023-4693 affecting Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 7.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
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. This vulnerability is considered as 'Low' severity by Red Hat as the NTFS module is not shipped as part of Red Hat's signed grub2 image.
Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Red Hat fixing advisory: RHSA-2024:3184, RHSA-2024:2456.
Affected products named by the advisory: Red Hat package: grub2.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 19 days ago·verify at source
- grub2-1:2.02-156.el8
- grub2-1:2.06-77.el9
- RHSA-2024:3184
- RHSA-2024:2456
Official advisory · high-confidence parse· fetched 19 days ago·verify at source
Mitigation
Upgrade to a fixed release: grub2-1:2.02-156.el8, grub2-1:2.06-77.el9, RHSA-2024:3184, RHSA-2024:2456. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 19 days ago·verify at source
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