Out-of-bounds Read Affecting grub2-efi-aa64-cdboot package, versions <1:2.06-14.amzn2.0.2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-AMZN2-GRUB2EFIAA64CDBOOT-6016165
  • published20 Oct 2023
  • disclosed25 Oct 2023

Introduced: 20 Oct 2023

CVE-2023-4693  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 grub2-efi-aa64-cdboot to version 1:2.06-14.amzn2.0.2 or higher.
This issue was patched in ALAS2-2023-2292.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-efi-aa64-cdboot package and not the grub2-efi-aa64-cdboot package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

CVSS Scores

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