Vulnerability CVE-2015-8872
Published: 2016-06-03

Description:
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."

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Opensuse -> LEAP 
Opensuse -> Opensuse 
Novell -> LEAP 
Novell -> Opensuse 
Dosfstools project -> Dosfstools 
Canonical -> Ubuntu linux 

 References:
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/07908124838afcc99c577d1d3e84cef2dbd39cb7
https://github.com/dosfstools/dosfstools/issues/12
https://github.com/dosfstools/dosfstools/releases/tag/v4.0
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