CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.8 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Microsoft Windows 10/Server 2016 (Operating System). This affects an unknown functionality of the component VHD Driver. The manipulation with an unknown input leads to a access control vulnerability (File). 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 summary by CVE is:
Virtual Hard Disk Driver in Windows 10 Gold, 1511, and 1607 and Windows Server 2016 does not properly restrict access to files, which allows local users to gain privileges via a crafted application, aka "VHD Driver Elevation of Privilege Vulnerability."
The weakness was presented 11/08/2016 by James Forshaw with Google Project Zero as MS16-138 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. This vulnerability is uniquely identified as CVE-2016-7226 since 09/09/2016. The exploitability is told to be easy. Attacking locally is a requirement. The successful exploitation needs a authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.
The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 94639 (MS16-138: Security Update for Microsoft Virtual Hard Disk Driver (3199647)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91296 (Microsoft Windows Security Update for Microsoft Virtual Hard Disk Driver (MS16-138)).
Applying the patch MS16-138 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 (94639) and Exploit-DB (40763). See 93420, 93421 and 93422 for similar entries.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.1VulDB Meta Temp Score: 5.8
VulDB Base Score: 6.1
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.1
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Name: FileClass: Access control / File
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 94639
Nessus Name: MS16-138: Security Update for Microsoft Virtual Hard Disk Driver (3199647)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 802074
OpenVAS Name: Microsoft Virtual Hard Disk Driver Multiple Vulnerabilities (3199647)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: MS16-138
Timeline
09/09/2016 🔍11/08/2016 🔍
11/08/2016 🔍
11/08/2016 🔍
11/08/2016 🔍
11/09/2016 🔍
11/10/2016 🔍
09/30/2022 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: MS16-138
Researcher: James Forshaw
Organization: Google Project Zero
Status: Confirmed
CVE: CVE-2016-7226 (🔍)
OVAL: 🔍
SecurityTracker: 1037248
SecurityFocus: 94018 - Microsoft Windows CVE-2016-7226 Local Privilege Escalation Vulnerability
scip Labs: https://www.scip.ch/en/?labs.20161215
See also: 🔍
Entry
Created: 11/09/2016 10:50Updated: 09/30/2022 09:40
Changes: 11/09/2016 10:50 (72), 05/28/2019 00:17 (16), 09/30/2022 09:40 (3)
Complete: 🔍
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