CVE-2021-33285
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787, CWE-20
- Affected
- tuxera/ntfs-3g · redhat/enterprise linux · fedoraproject/fedora · debian/debian linux
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2021/08/30/1Mailing List, Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386Issue Tracking, Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2001608Issue Tracking, Third 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 List, Third Party Advisory
- 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/
- 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 List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/30/1Mailing List, Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386Issue Tracking, Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2001608Issue Tracking, Third 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 List, Third Party Advisory
- 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/
- 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 List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.