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CVE-2015-8872Date: (C)2016-06-13   (M)2018-06-17


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."

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 6.2CVSS Score : 2.1
Exploit Score: 2.5Exploit Score: 3.9
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
BID-90311
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
openSUSE-SU-2016:1461
openSUSE-SU-2016:2233

CPE    7
cpe:/a:dosfstools_project:dosfstools:3.0.28
cpe:/o:novell:opensuse:13.2
cpe:/o:canonical:ubuntu_linux:16.04::~~lts~~~
cpe:/o:canonical:ubuntu_linux:12.04::~~lts~~~
...
CWE    1
CWE-189
OVAL    3
oval:org.secpod.oval:def:110553
oval:org.secpod.oval:def:110597
oval:org.secpod.oval:def:703139

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