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.
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Affected Vendors & Products
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History
Wed, 03 Dec 2025 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-20 | |
| Metrics |
cvssV3_1
|
ssvc
|
Status: PUBLISHED
Assigner: mitre
Published: 2021-09-07T00:00:00.000Z
Updated: 2025-12-03T14:52:54.868Z
Reserved: 2021-05-20T00:00:00.000Z
Link: CVE-2021-33285
Updated: 2024-08-03T23:42:20.414Z
Status : Modified
Published: 2021-09-07T14:15:11.567
Modified: 2025-12-03T15:15:49.240
Link: CVE-2021-33285