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CVE-2023-4693— Grub2: out-of-bounds read at fs/ntfs.c

CVSS 5.3 · Medium EPSS 0.50% · P40

Affected Version Matrix 3

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 7anyaffected
Red HatRed Hat Enterprise Linux 81:2.02-156.el8< *unaffected
Red HatRed Hat Enterprise Linux 91:2.06-77.el9< *unaffected
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I. Basic Information for CVE-2023-4693

Vulnerability Information
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Vulnerability Title
Grub2: out-of-bounds read at fs/ntfs.c
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
grub2 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
grub2是美国GNU社区的一款Linux系统引导程序。 grub2存在安全漏洞，该漏洞源于NTFS文件系统驱动程序存在越界读取漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 8 1:2.02-156.el8 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 9 1:2.06-77.el9 ~ * cpe:/o:redhat:enterprise_linux:9::baseos
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7

II. Public POCs for CVE-2023-4693

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III. Intelligence Information for CVE-2023-4693

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Vendor Advisories for CVE-2023-4693 (6)

Mailing List Discussions for CVE-2023-4693 (5)

Other References for CVE-2023-4693 (1)

Same Patch Batch · Red Hat · 2023-10-25 · 4 CVEs total

CVE-2023-53677.8 HIGHXorg-x11-server: out-of-bounds write in xichangedeviceproperty/rrchangeoutputproperty
CVE-2023-55747.0 HIGHXorg-x11-server: use-after-free bug in damagedestroy
CVE-2023-53804.7 MEDIUMXorg-x11-server: use-after-free bug in destroywindow

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2023-4693

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