dosfstools up to 3.x FAT12 Filesystem fat.c set_fat numeric error

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in dosfstools up to 3.x. This affects the function set_fat of the file fat.c of the component FAT12 Filesystem Handler. Such manipulation leads to numeric error. This vulnerability is uniquely identified as CVE-2015-8872. Local access is required to approach this attack. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in dosfstools up to 3.x. It has been rated as problematic. Affected by this issue is the function set_fat of the file fat.c of the component FAT12 Filesystem Handler. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is availability. CVE summarizes:

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."

The weakness was disclosed 06/03/2016 (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2015-8872 since 05/14/2016. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 91439 (openSUSE Security Update : dosfstools (openSUSE-2016-671)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169085 (SUSE Enterprise Linux Security Update for dosfstools (SUSE-SU-2016:2145-1)).

Upgrading to version 4.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91439) and SecurityFocus (BID 90311†). The entry VDB-87730 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.2
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91439
Nessus Name: openSUSE Security Update : dosfstools (openSUSE-2016-671)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860693
OpenVAS Name: Fedora Update for dosfstools FEDORA-2016-e2d635cbf8
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: dosfstools 4.0
Patch: github.com

Timelineinfo

05/08/2016 🔍
05/14/2016 +6 days 🔍
06/01/2016 +18 days 🔍
06/02/2016 +1 days 🔍
06/03/2016 +1 days 🔍
06/03/2016 +0 days 🔍
06/04/2016 +1 days 🔍
08/22/2022 +2270 days 🔍

Sourcesinfo

Product: github.com

Advisory: USN-2986-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8872 (🔍)
GCVE (CVE): GCVE-0-2015-8872
GCVE (VulDB): GCVE-100-87722
SecurityFocus: 90311 - dosfstools Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 06/04/2016 12:26
Updated: 08/22/2022 19:22
Changes: 06/04/2016 12:26 (65), 01/01/2019 12:42 (13), 08/22/2022 19:22 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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