Microsoft Windows 10 1803/Server 1803 Hyper-V input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Microsoft Windows 10 1803/Server 1803. The affected element is an unknown function of the component Hyper-V. Such manipulation leads to input validation. This vulnerability is documented as CVE-2018-8436. The attack requires being on the local network. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 10 1803/Server 1803 (Operating System). It has been rated as critical. Affected by this issue is an unknown functionality of the component Hyper-V. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability.

The bug was discovered 09/11/2018. The weakness was released 09/11/2018 with Tencent as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2018-8436 since 03/14/2018. The exploitation is known to be difficult. The attack can only be done within the local network. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available. The advisory points out:

A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash.

The vulnerability scanner Nessus provides a plugin with the ID 117411 (KB4457128: Windows 10 Version 1803 and Windows Server Version 1803 September 2018 Security Update), 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 371164 (Microsoft Windows Security Update September 2018).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117411) and SecurityFocus (BID 105236†). Entries connected to this vulnerability are available at VDB-123823, VDB-123825, VDB-123826 and VDB-123833. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 5.4
Vendor Vector (Microsoft): 🔍

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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117411
Nessus Name: KB4457128: Windows 10 Version 1803 and Windows Server Version 1803 September 2018 Security Update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

03/14/2018 🔍
09/11/2018 +180 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/11/2018 +0 days 🔍
09/12/2018 +0 days 🔍
09/12/2018 +0 days 🔍
05/08/2023 +1699 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: Tencent
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8436 (🔍)
GCVE (CVE): GCVE-0-2018-8436
GCVE (VulDB): GCVE-100-123866

OVAL: 🔍

SecurityFocus: 105236 - Microsoft Windows Hyper-V CVE-2018-8436 Remote Denial of Service Vulnerability
SecurityTracker: 1041624

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

Entryinfo

Created: 09/12/2018 08:35
Updated: 05/08/2023 13:09
Changes: 09/12/2018 08:35 (86), 03/22/2020 16:01 (6), 05/08/2023 13:09 (5)
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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