CVE-2021-33285
ntfs-3g - security update
7.8
HIGH
CVSS 3.1
EPSS 0.04%
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.
How to fix CVE-2021-33285
To remediate CVE-2021-33285, upgrade the affected package to a fixed version below.
- —upgrade to 1:2017.3.23AR.3-4+deb11u1 or later
- —upgrade to 1:2016.2.22AR.1+dfsg-1+deb9u2 or later
- —upgrade to 1:2017.3.23AR.3-3+deb10u1 or later
Is CVE-2021-33285 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1:2017.3.23AR.3-4+deb11u1
- from 0, < 1:2016.2.22AR.1+dfsg-1+deb9u2
- from 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 |