UBUNTU-CVE-2021-33285

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Source
https://ubuntu.com/security/CVE-2021-33285
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33285.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-33285
Upstream
Related
Published
2021-09-07T14:15:00Z
Modified
2025-09-08T16:47:11Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function ntfsgetattributevalue, 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 "bytesinuse" field should be less than the "bytesallocated" field. When it is not, the parsing of the records proceeds into the wild.

References

Affected packages

Ubuntu:Pro:14.04:LTS / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2013.1.13AR.1-2ubuntu2+esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2013.1.13AR.1-2ubuntu2+esm1

Affected versions

1:2013.*

1:2013.1.13AR.1-2ubuntu1
1:2013.1.13AR.1-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ntfs-3g",
            "binary_version": "1:2013.1.13AR.1-2ubuntu2+esm1"
        },
        {
            "binary_name": "ntfs-3g-dev",
            "binary_version": "1:2013.1.13AR.1-2ubuntu2+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2015.3.14AR.1-1ubuntu0.3+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2015.3.14AR.1-1ubuntu0.3+esm1

Affected versions

1:2014.*

1:2014.2.15AR.3-3

1:2015.*

1:2015.3.14AR.1-1
1:2015.3.14AR.1-1build1
1:2015.3.14AR.1-1ubuntu0.1
1:2015.3.14AR.1-1ubuntu0.2
1:2015.3.14AR.1-1ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ntfs-3g",
            "binary_version": "1:2015.3.14AR.1-1ubuntu0.3+esm1"
        },
        {
            "binary_name": "ntfs-3g-dev",
            "binary_version": "1:2015.3.14AR.1-1ubuntu0.3+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:18.04:LTS / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2017.3.23-2ubuntu0.18.04.3?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2017.3.23-2ubuntu0.18.04.3

Affected versions

1:2016.*

1:2016.2.22AR.2-2

1:2017.*

1:2017.3.23-2
1:2017.3.23-2ubuntu0.18.04.1
1:2017.3.23-2ubuntu0.18.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libntfs-3g88",
            "binary_version": "1:2017.3.23-2ubuntu0.18.04.3"
        },
        {
            "binary_name": "ntfs-3g",
            "binary_version": "1:2017.3.23-2ubuntu0.18.04.3"
        },
        {
            "binary_name": "ntfs-3g-dev",
            "binary_version": "1:2017.3.23-2ubuntu0.18.04.3"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2017.3.23AR.3-3ubuntu1.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2017.3.23AR.3-3ubuntu1.1

Affected versions

1:2017.*

1:2017.3.23AR.3-3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libntfs-3g883",
            "binary_version": "1:2017.3.23AR.3-3ubuntu1.1"
        },
        {
            "binary_name": "ntfs-3g",
            "binary_version": "1:2017.3.23AR.3-3ubuntu1.1"
        },
        {
            "binary_name": "ntfs-3g-dev",
            "binary_version": "1:2017.3.23AR.3-3ubuntu1.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / ntfs-3g

Package

Name
ntfs-3g
Purl
pkg:deb/ubuntu/ntfs-3g@1:2017.3.23AR.3-3ubuntu5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2017.3.23AR.3-3ubuntu5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libntfs-3g883",
            "binary_version": "1:2017.3.23AR.3-3ubuntu5"
        },
        {
            "binary_name": "ntfs-3g",
            "binary_version": "1:2017.3.23AR.3-3ubuntu5"
        },
        {
            "binary_name": "ntfs-3g-dev",
            "binary_version": "1:2017.3.23AR.3-3ubuntu5"
        }
    ],
    "availability": "No subscription required"
}