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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2023-4693
HistoryOct 25, 2023 - 6:17 p.m.

CVE-2023-4693

2023-10-2518:17:41
Debian Security Bug Tracker
security-tracker.debian.org
12
cve-2023-4693
out-of-bounds read
grub2
ntfs
memory access
physically present attacker
sensitive data
efi variable
confidentiality risk
unix

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

32.6%

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.

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

32.6%