CVE-2021-39263: Buffer Overflow
First published: Mon Sep 06 2021(Updated: )
A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in ntfs_get_attribute_value, 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 |
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Reference Links
- 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://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://security-tracker.debian.org/tracker/CVE-2021-39263
Frequently Asked Questions
What is the severity of CVE-2021-39263?
CVE-2021-39263 is classified as a high severity vulnerability due to the potential for heap-based buffer overflow which can lead to arbitrary code execution.
How do I fix CVE-2021-39263?
To remediate CVE-2021-39263, update ntfs-3g to version 2021.8.22 or later.
Which software is affected by CVE-2021-39263?
CVE-2021-39263 affects ntfs-3g versions prior to 2021.8.22 and specific Debian packages dependent on ntfs-3g.
Can CVE-2021-39263 be exploited remotely?
Yes, CVE-2021-39263 can be exploited remotely if a user mounts a malicious NTFS image.
What types of systems are vulnerable to CVE-2021-39263?
CVE-2021-39263 primarily affects systems running Linux distributions that utilize the ntfs-3g filesystem driver.
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