CVE-2023-4949

2023-11-1017:15:07

CWE-119

CWE-787

CWE-190

Google

web.nvd.nist.gov

cve-2023-4949

local access

system

disk

external drive

xfs partition

memory corruption

grub-legacy

CVSS3

8.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

HIGH

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

AI Score

6.7

Confidence

High

EPSS

Percentile

5.1%

JSON

An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.

Affected configurations

Nvd

Vulners

Node

gnugrubRange≤0.97

Node

xenxenMatch-

VendorProductVersionCPE
gnugrub*cpe:2.3:a:gnu:grub:*:*:*:*:*:*:*:*
xenxen-cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
gnu	grub	*	cpe:2.3:a:gnu:grub::::::::
xen	xen	-	cpe:2.3:o:xen:xen:-:::::::*

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Grub-Legacy",
    "vendor": "Free Software Foundation",
    "versions": [
      {
        "lessThanOrEqual": "0.97",
        "status": "affected",
        "version": "0",
        "versionType": "git"
      }
    ]
  }
]