CVE-2021-39257
5.5 · MEDIUMOverview
CVE-2021-39257 is a medium-severity vulnerability affecting tuxera ntfs-3g. It was published on September 7, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
A crafted NTFS image with an unallocated bitmap can lead to a endless recursive function call chain (starting from ntfs_attr_pwrite), causing stack consumption in NTFS-3G < 2021.8.22.
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-2021-39257?
CVE-2021-39257 is a medium-severity vulnerability affecting tuxera ntfs-3g. It was published on September 7, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2021-39257?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-39257?
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-2021-39257?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-39257 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
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