UBUNTU-CVE-2021-33285

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UBUNTU-CVE-2021-33285

Summary:

Details: 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.

References: https://ubuntu.com/security/CVE-2021-33285, https://www.openwall.com/lists/oss-security/2021/08/30/1, https://ubuntu.com/security/notices/USN-5060-1, https://ubuntu.com/security/notices/USN-5060-2, https://www.cve.org/CVERecord?id=CVE-2021-33285