CVE-2021-33285
HIGH7.8EPSS 0.04%ntfs-3g - security update
Published: 9/7/2021Modified: 3/9/2026
Also known as:DEBIAN-CVE-2021-33285DEBIAN-CVE-2021-33286DEBIAN-CVE-2021-33287DEBIAN-CVE-2021-33289DEBIAN-CVE-2021-35267DEBIAN-CVE-2021-35268DEBIAN-CVE-2021-35269DEBIAN-CVE-2021-39251DEBIAN-CVE-2021-39252DEBIAN-CVE-2021-39253DEBIAN-CVE-2021-39254DEBIAN-CVE-2021-39255DEBIAN-CVE-2021-39256DEBIAN-CVE-2021-39257DEBIAN-CVE-2021-39258DEBIAN-CVE-2021-39259DEBIAN-CVE-2021-39260DEBIAN-CVE-2021-39261DEBIAN-CVE-2021-39262DEBIAN-CVE-2021-39263DLA-2819-1
Description
In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the "bytes_in_use" field should be less than the "bytes_allocated" field. When it is not, the parsing of the records proceeds into the wild.
Affected packages (3)
- Debian/ntfs-3gfrom 0, < 1:2017.3.23AR.3-4+deb11u1
- Debian/ntfs-3gfrom 0, < 1:2016.2.22AR.1+dfsg-1+deb9u2
- Debian/ntfs-3gfrom 0, < 1:2017.3.23AR.3-3+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |