CVE-2021-33285

CVSS V2 Medium 6.9 CVSS V3 High 7.8

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.

Overview

CVE ID
CVE-2021-33285

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-09-07T14:15:11

Last Modified Date
2023-01-13T19:59:09

Weakness Enumerations

CWE	URL
CWE-787	http://cwe.mitre.org/data/definitions/787.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
cpe:2.3:a:tuxera:ntfs-3g::::::::	1	OR	2021.8.22
cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*	1	OR
cpe:2.3:o:redhat:enterprise_linux:8.0::::-:::	1	OR
cpe:2.3:o:redhat:enterprise_linux:8.0::::advanced_virtualization:::	1	OR
cpe:2.3:o:fedoraproject:fedora:33:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:35:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:9.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:11.0:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
6.9

Severity
MEDIUM

Exploitability Score
3.4

Impact Score
10

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.8

Impact Score
5.9

References

Reference URL	Reference Tags
http://www.openwall.com/lists/oss-security/2021/08/30/1	Mailing List Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386	Issue Tracking Mailing List Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2001608	Issue Tracking Third Party Advisory
https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00013.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/766ISTT3KCARKFUIQT7N6WV6T63XOKG3/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HSEKTKHO5HFZHWZNJNBJZA56472KRUZI/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202301-01
https://www.debian.org/security/2021/dsa-4971	Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/08/30/1	Mailing List Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-33285
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33285

History

Created	Old Value	New Value	Data Type	Notes
2022-05-08 06:19:46				Added to TrackCVE
2022-12-05 09:44:22	2021-09-07T14:15Z	2021-09-07T14:15:11	CVE Published Date	updated
2022-12-05 09:44:22		2022-05-03T16:04:40	CVE Modified Date	updated
2022-12-05 09:44:22		Analyzed	Vulnerability Status	updated
2023-01-12 05:12:42		2023-01-11T07:15:12	CVE Modified Date	updated
2023-01-12 05:12:42	Analyzed	Undergoing Analysis	Vulnerability Status	updated
2023-01-12 05:12:45			References	updated
2023-01-13 20:16:38		2023-01-13T19:59:09	CVE Modified Date	updated
2023-01-13 20:16:38	Undergoing Analysis	Analyzed	Vulnerability Status	updated