| Name | CVE-2021-33285 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2819-1, DSA-4971-1, ELA-523-1 |
| Debian Bugs | 988386 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ntfs-3g (PTS) | jessie, jessie (lts) | 1:2014.2.15AR.2-1+deb8u7 | fixed |
| stretch (security) | 1:2016.2.22AR.1+dfsg-1+deb9u3 | fixed | |
| stretch (lts), stretch | 1:2016.2.22AR.1+dfsg-1+deb9u5 | fixed | |
| buster, buster (lts) | 1:2017.3.23AR.3-4+deb11u4~deb10u1 | fixed | |
| buster (security) | 1:2017.3.23AR.3-3+deb10u3 | fixed | |
| bullseye | 1:2017.3.23AR.3-4+deb11u4 | fixed | |
| bullseye (security) | 1:2017.3.23AR.3-4+deb11u3 | fixed | |
| bookworm | 1:2022.10.3-1+deb12u2 | fixed | |
| sid, trixie | 1:2022.10.3-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ntfs-3g | source | experimental | 1:2021.8.22-1 | |||
| ntfs-3g | source | jessie | 1:2014.2.15AR.2-1+deb8u5 | ELA-523-1 | ||
| ntfs-3g | source | stretch | 1:2016.2.22AR.1+dfsg-1+deb9u2 | DLA-2819-1 | ||
| ntfs-3g | source | buster | 1:2017.3.23AR.3-3+deb10u1 | DSA-4971-1 | ||
| ntfs-3g | source | bullseye | 1:2017.3.23AR.3-4+deb11u1 | DSA-4971-1 | ||
| ntfs-3g | source | (unstable) | 1:2021.8.22-2 | 988386 |
https://www.openwall.com/lists/oss-security/2021/08/30/1
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp