CVE-2023-4693Out-of-bounds Read in Grub2

CWE-125Out-of-bounds Read10 documents9 sources
Severity
4.6MEDIUMNVD
CNA5.3
EPSS
0.0%
top 99.08%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedOct 25
Latest updateMar 6

Description

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 vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 0.9 | Impact: 3.6

Affected Packages2 packages

NVDgnu/grub2< 2.12
Debiangnu/grub2< 2.06-3~deb11u6+3

Also affects: Enterprise Linux 8.0, 9.0

🔴Vulnerability Details

4
GHSA
GHSA-r62p-gp92-7444: An out-of-bounds read flaw was found on grub2's NTFS filesystem driver2023-10-25
OSV
CVE-2023-4693: An out-of-bounds read flaw was found on grub2's NTFS filesystem driver2023-10-25
CVEList
Grub2: out-of-bounds read at fs/ntfs.c2023-10-25
OSV
grub2-signed, grub2-unsigned vulnerabilities2023-10-04

📋Vendor Advisories

4
Microsoft
Grub2: out-of-bounds read at fs/ntfs.c2023-10-10
Ubuntu
GRUB2 vulnerabilities2023-10-04
Red Hat
grub2: out-of-bounds read at fs/ntfs.c2023-10-03
Debian
CVE-2023-4693: grub2 - An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This iss...2023

💬Community

1
Bugzilla
CVE-2023-52592 kernel: libbpf: Fix NULL pointer dereference in bpf_object__collect_prog_relos2024-03-06