CVE-2021-33285

 

Published at: - 07-09-2021 04:15

Last modified: - 13-01-2023 08:59

Total changes: - 12

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp
• https://bugzilla.redhat.com/show_bug.cgi?id=2001608
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386
• https://www.openwall.com/lists/oss-security/2021/08/30/1
• [oss-security] 20210830 NTFS3G-SA-2021-0001: Multiple buffer overflows in all versions of NTFS-3G-Mailing List, Third Party Advisory
• DSA-4971-Third Party Advisory
• FEDORA-2021-e7c8ba6301-Mailing List, Third Party Advisory
• FEDORA-2021-5b1dac797b-Mailing List, Third Party Advisory
• [debian-lts-announce] 20211116 [SECURITY] [DLA 2819-1] ntfs-3g security update-Mailing List, Third Party Advisory
• GLSA-202301-01-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-33285

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures