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CVE-2015-8872

Published: 31 December 2015

The set_fat function in fat.c in dosfstools before 4.0 might allow attackers to corrupt a FAT12 filesystem or cause a denial of service (invalid memory read and crash) by writing an odd number of clusters to the third to last entry on a FAT12 filesystem, which triggers an "off-by-two error."

Priority

Low

Cvss 3 Severity Score

6.2

Score breakdown

Status

Package Release Status
dosfstools
Launchpad, Ubuntu, Debian
precise
Released (3.0.12-1ubuntu1.3)
trusty
Released (3.0.26-1ubuntu0.1)
upstream
Released (4.0-1)
wily
Released (3.0.28-1ubuntu0.1)
xenial
Released (3.0.28-2ubuntu0.1)
yakkety Not vulnerable
(4.0-2ubuntu1)
zesty Not vulnerable
(4.0-2ubuntu1)
Patches:
upstream: https://github.com/dosfstools/dosfstools/commit/39ce90fe75661ed8842551cd44ea7fec278a60a1
upstream: https://github.com/dosfstools/dosfstools/commit/07908124838afcc99c577d1d3e84cef2dbd39cb7

Severity score breakdown

Parameter Value
Base score 6.2
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H