Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tuxera | Ntfs-3G | < 2021.8.22 |
| Redhat | Enterprise Linux | 7.0 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/08/30/1Mailing ListThird Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386Issue TrackingMailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2001608Issue TrackingThird Party Advisory
- https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jpThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00013.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202301-01Third Party Advisory
- https://www.debian.org/security/2021/dsa-4971Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/08/30/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/30/1Mailing ListThird Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386Issue TrackingMailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2001608Issue TrackingThird Party Advisory
- https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jpThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00013.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2021-33285?
CVE-2021-33285 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2021-33285?
CVE-2021-33285 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-33285?
Check the references section above for vendor advisories and patch information. Affected products include: Tuxera Ntfs-3G, Redhat Enterprise Linux, Fedoraproject Fedora, Debian Debian Linux.