CVE-2021-33285
7.8 · HIGHOverview
CVE-2021-33285 is a high-severity vulnerability affecting tuxera ntfs-3g. It was published on September 7, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from tuxera. Update ntfs-3g to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| tuxera | ntfs-3g | >= 0, < 2021.8.22 | Affected |
References
Frequently Asked Questions
What is CVE-2021-33285?
CVE-2021-33285 is a high-severity vulnerability affecting tuxera ntfs-3g. It was published on September 7, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2021-33285?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-33285?
Check the references section for vendor advisories and patches from tuxera. Update ntfs-3g to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-33285?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-33285 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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