Microsoft Windows up to Server 2012 R2 Secure Boot access control

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft Windows 8.1/10/RT 8.1/Server 2012/Server 2012 R2. This affects an unknown part of the component Secure Boot. The manipulation results in access control. This vulnerability was named CVE-2016-3320. The attack may be performed from remote. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 8.1/10/RT 8.1/Server 2012/Server 2012 R2 (Operating System). It has been classified as problematic. Affected is some unknown functionality of the component Secure Boot. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 08/09/2016 with Microsoft as MS16-100 as confirmed bulletin (Technet). The advisory is shared for download at technet.microsoft.com. This vulnerability is traded as CVE-2016-3320 since 03/15/2016. The exploitability is told to be easy. The attack needs to be approached locally. A authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/07/2024). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 94775 (Fedora 25 : dbxtool (2016-0f013aee39)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91259 (Microsoft Secure Boot Security Feature Bypass Vulnerability (MS16-100)).

Applying the patch MS16-100 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (94775) and SecurityFocus (BID 92304†). See VDB-90712, VDB-90711, VDB-90709 and VDB-90710 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.9
NVD Vector: 🔍

CVSSv2info

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

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Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94775
Nessus Name: Fedora 25 : dbxtool (2016-0f013aee39)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for dbxtool FEDORA-2016-0f013aee39
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS16-100

Timelineinfo

03/15/2016 🔍
08/09/2016 +147 days 🔍
08/09/2016 +0 days 🔍
08/09/2016 +0 days 🔍
08/09/2016 +0 days 🔍
08/10/2016 +1 days 🔍
11/15/2016 +97 days 🔍
10/07/2024 +2883 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS16-100
Organization: Microsoft
Status: Confirmed

CVE: CVE-2016-3320 (🔍)
GCVE (CVE): GCVE-0-2016-3320
GCVE (VulDB): GCVE-100-90708
SecurityFocus: 92304 - Microsoft Windows CVE-2016-3320 Local Security Bypass Vulnerability
SecurityTracker: 1036573

scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍

Entryinfo

Created: 08/10/2016 12:20
Updated: 10/07/2024 05:07
Changes: 08/10/2016 12:20 (66), 03/23/2019 17:24 (12), 09/13/2022 15:54 (4), 10/07/2024 05:07 (16)
Complete: 🔍
Cache ID: 216::103

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