CVE-2016-4804 Information

Description

The read_boot function in boot.c in dosfstools before 4.0 allows attackers to cause a denial of service (crash) via a crafted filesystem which triggers a heap-based buffer overflow in the (1) read_fat function or an out-of-bounds heap read in (2) get_fat function.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-updates/2016-06/msg00001.html http://lists.opensuse.org/opensuse-updates/2016-09/msg00014.html http://www.securityfocus.com/bid/90311 http://www.ubuntu.com/usn/USN-2986-1 https://blog.fuzzing-project.org/44-dosfstools-fsck.vfat-Several-invalid-memory-accesses.html https://github.com/dosfstools/dosfstools/commit/e8eff147e9da1185f9afd5b25948153a3b97cf52 https://github.com/dosfstools/dosfstools/issues/25 https://github.com/dosfstools/dosfstools/issues/26 https://lists.debian.org/debian-lts-announce/2020/05/msg00028.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.2