CVE-2021-39251: Buffer Overflow
First published: Mon Sep 06 2021(Updated: )
A crafted NTFS image can cause a NULL pointer dereference in ntfs_extent_inode_open in NTFS-3G < 2021.8.22.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/ntfs3g | <2021.8.22 | 2021.8.22 |
| debian/ntfs-3g | 1:2017.3.23AR.3-4+deb11u3 1:2022.10.3-1 1:2022.10.3-3 | |
| ntfs-3g | <2021.8.22 | |
| Debian | =9.0 | |
| Debian | =10.0 | |
| Debian | =11.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Fedora | =33 | |
| Fedora | =35 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2021/08/30/1
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386
- https://bugzilla.redhat.com/show_bug.cgi?id=2001649
- https://github.com/tuxera/ntfs-3g/releases
- https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp
- https://lists.debian.org/debian-lts-announce/2021/11/msg00013.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/766ISTT3KCARKFUIQT7N6WV6T63XOKG3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HSEKTKHO5HFZHWZNJNBJZA56472KRUZI/
- https://security.gentoo.org/glsa/202301-01
- https://www.debian.org/security/2021/dsa-4971
- https://www.openwall.com/lists/oss-security/2021/08/30/1
- https://github.com/tuxera/ntfs-3g
- https://access.redhat.com/security/cve/CVE-2021-33285
- https://access.redhat.com/security/cve/CVE-2021-35269
- https://access.redhat.com/security/cve/CVE-2021-35268
- https://access.redhat.com/security/cve/CVE-2021-33289
- https://access.redhat.com/security/cve/CVE-2021-33286
- https://access.redhat.com/security/cve/CVE-2021-35266
- https://access.redhat.com/security/cve/CVE-2021-33287
- https://access.redhat.com/security/cve/CVE-2021-35267
- https://access.redhat.com/security/cve/CVE-2021-39251
- https://access.redhat.com/security/cve/CVE-2021-39252
- https://access.redhat.com/security/cve/CVE-2021-39253
- https://access.redhat.com/security/cve/CVE-2021-39254
- https://access.redhat.com/security/cve/CVE-2021-39255
- https://access.redhat.com/security/cve/CVE-2021-39256
- https://access.redhat.com/security/cve/CVE-2021-39257
- https://access.redhat.com/security/cve/CVE-2021-39258
- https://access.redhat.com/security/cve/CVE-2021-39259
- https://access.redhat.com/security/cve/CVE-2021-39260
- https://access.redhat.com/security/cve/CVE-2021-39261
- https://access.redhat.com/security/cve/CVE-2021-39262
- https://access.redhat.com/security/cve/CVE-2021-39263
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2004683
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2004680
- https://github.com/tuxera/ntfs-3g/commits/2021.8.22
- https://access.redhat.com/errata/RHSA-2021:3703
- https://access.redhat.com/security/cve/cve-2021-39251
- https://access.redhat.com/errata/RHSA-2021:3704
- https://access.redhat.com/errata/RHSA-2022:1759
- https://security-tracker.debian.org/tracker/CVE-2021-39251
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/766ISTT3KCARKFUIQT7N6WV6T63XOKG3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HSEKTKHO5HFZHWZNJNBJZA56472KRUZI/
Frequently Asked Questions
What is the severity of CVE-2021-39251?
CVE-2021-39251 has a medium severity due to the potential for a NULL pointer dereference, which can lead to denial of service.
How do I fix CVE-2021-39251?
To fix CVE-2021-39251, update the ntfs-3g package to version 2021.8.22 or later.
Which software is affected by CVE-2021-39251?
CVE-2021-39251 affects ntfs-3g versions prior to 2021.8.22 on several distributions including Red Hat and Debian.
What type of vulnerability is CVE-2021-39251?
CVE-2021-39251 is a vulnerability that allows for a NULL pointer dereference in the ntfs_extent_inode_open function.
Is there a specific environment where CVE-2021-39251 is critical?
CVE-2021-39251 is particularly critical in environments using ntfs-3g on older versions as it may lead to application crashes.
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