CVE-2023-4949

Status: Analyzed
Last modified: 20-11-2023
Published: 10-11-2023
6.7

SUMMARY CVE-2023-4949

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.

Access CVSS3 CVE-2023-4949

Attack Complexity Attack Vector Privileges Required Scope User Interaction
LOW LOCAL HIGH UNCHANGED NONE

Impact CVSS3 CVE-2023-4949

Confidentiality Integrity Availability
HIGH HIGH HIGH

Details CVE-2023-4949

EPSS 0.00042
EPSS % 0.05047
References
CWE CWE-190
CAPEC
  • Forced Integer Overflow: This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
Vulnerable Configurations
  • cpe:2.3:a:gnu:grub:-:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:grub:-:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:grub:0.97:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:grub:0.97:*:*:*:*:*:*:*
  • cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
    cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
CVSS3 Source nvd@nist.gov
CVSS3 Type Primary
CVSS3 Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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