Home/CVE/A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in the function n
CVE

CVE-2021-39254

A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in the function n

A crafted NTFS image can cause an integer overflow in memmove, leading to a heap-based buffer overflow in the function ntfs_attr_record_resize, in NTFS-3G < 2021.8.22.

HIGH · CVSS 7.8 EPSS 0.00022
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-190Integer Overflow or Wraparound
CWE-20Improper Input Validation
▤

Affected Products & Versions

3
tuxera ntfs-3g< 2021.8.22
debian linuxall versions
fedoraproject fedoraall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
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 NVD07 Sep 2021 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
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

4
rhsaRHSA-2022:1759Moderate
msrcCVE-2021-39254
rhsaRHSA-2021:3704Moderate
rhsaRHSA-2021:3703Moderate
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/tuxera/ntfs-3g/releasesRelease NotesThird Party Advisory
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jpThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00013.htmlMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/766ISTT3KCARKFUIQT7N6WV6T63XOKG3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSEKTKHO5HFZHWZNJNBJZA56472KRUZI/
https://security.gentoo.org/glsa/202301-01Third Party Advisory
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