// For flags

CVE-2023-4949

Memory Corruption Vulnerability in Grub-Legacy's XFS Implementation

Severity Score

6.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

Un atacante con acceso local a un sistema (ya sea a través de un disco o una unidad externa) puede presentar una partición XFS modificada a grub-legacy de tal manera que aproveche una corrupción de memoria en la implementación del sistema de archivos XFS de grub.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
Multiple
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-09-13 CVE Reserved
  • 2023-11-10 CVE Published
  • 2024-09-03 CVE Updated
  • 2025-04-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-190: Integer Overflow or Wraparound
  • CWE-787: Out-of-bounds Write
CAPEC
  • CAPEC-92: Forced Integer Overflow
  • CAPEC-100: Overflow Buffers
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
https://xenbits.xenproject.org/xsa/advisory-443.html 2023-11-20
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Gnu
Search vendor "Gnu"
 Grub
Search vendor "Gnu" for product "Grub"
 <= 0.97
Search vendor "Gnu" for product "Grub" and version " <= 0.97"
-
Affected
Xen
Search vendor "Xen"
 Xen
Search vendor "Xen" for product "Xen"
--
Affected