Home/CVE/An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition
CVE

CVE-2023-4949

An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition

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.

HIGH · CVSS 8.1 EPSS 0.00044
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-190Integer Overflow or Wraparound
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

2
gnu grub<= 0.97
xenall versions
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · cve-coordination@google.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Nov 2023 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

9
suse-csafopenSUSE-SU-2024:13442-1
suse-csafSUSE-SU-2023:4475-1
suse-csafSUSE-SU-2023:4476-1
suse-csafSUSE-SU-2023:4174-1
suse-csafSUSE-SU-2023:4183-1
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://xenbits.xenproject.org/xsa/advisory-443.htmlPatchThird Party Advisory
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