Microsoft Windows 8.1/10/Server 2012 R2 Hyper-V Restriction code

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Microsoft Windows 8.1/10/Server 2012 R2. Affected by this issue is some unknown functionality of the component Hyper-V. The manipulation leads to Local Privilege Escalation (Restriction). This vulnerability is traded as CVE-2015-2534. An attack has to be approached locally. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 8.1/10/Server 2012 R2 (Operating System) and classified as problematic. This issue affects some unknown functionality of the component Hyper-V. The manipulation with an unknown input leads to a code vulnerability (Restriction). Using CWE to declare the problem leads to CWE-17. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Hyper-V in Microsoft Windows 8.1, Windows Server 2012 R2, and Windows 10 improperly processes ACL settings, which allows local users to bypass intended network-traffic restrictions via a crafted application, aka "Hyper-V Security Feature Bypass Vulnerability."

The weakness was shared 09/08/2015 as MS15-105 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The identification of this vulnerability is CVE-2015-2534. Attacking locally is a requirement. A simple authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 85848 (MS15-105: Vulnerability in Windows Hyper-V Could Allow Security Feature Bypass (3091287)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 91093 (Microsoft Hyper-V Security Bypass Vulnerability (MS15-105)).

Applying the patch MS15-105 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 (85848), SecurityFocus (BID 76604†), SecurityTracker (ID 1033496†) and Vulnerability Center (SBV-52540†). The entries VDB-77640, VDB-77636 and VDB-77635 are related to this item. Be aware that VulDB is the high quality 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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Name: Restriction
Class: Code / Restriction
CWE: CWE-17
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: 85848
Nessus Name: MS15-105: Vulnerability in Windows Hyper-V Could Allow Security Feature Bypass (3091287)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: MS15-105

Timelineinfo

03/19/2015 🔍
09/08/2015 +173 days 🔍
09/08/2015 +0 days 🔍
09/08/2015 +0 days 🔍
09/08/2015 +0 days 🔍
09/08/2015 +0 days 🔍
09/09/2015 +1 days 🔍
09/09/2015 +0 days 🔍
11/27/2024 +3367 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: MS15-105
Status: Confirmed

CVE: CVE-2015-2534 (🔍)
GCVE (CVE): GCVE-0-2015-2534
GCVE (VulDB): GCVE-100-77639
SecurityFocus: 76604
SecurityTracker: 1033496 - Microsoft Hyper-V ACL Flaw Lets Local Users Bypass Security Restrictions
Vulnerability Center: 52540 - [MS15-105] Microsoft Windows Hyper-V Local Security Bypass Vulnerability via Crafted Application, Low

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

Entryinfo

Created: 09/09/2015 10:07
Updated: 11/27/2024 13:15
Changes: 09/09/2015 10:07 (47), 04/07/2017 16:05 (16), 06/14/2022 17:43 (2), 06/14/2022 17:51 (7), 06/14/2022 17:59 (1), 11/27/2024 13:15 (16)
Complete: 🔍
Cache ID: 216::103

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