VMware Workstation/Fusion VNC Session resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in VMware Workstation and Fusion. Affected by this issue is some unknown functionality of the component VNC Session Handler. Executing a manipulation can lead to resource management. This vulnerability is handled as CVE-2018-6957. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in VMware Workstation and Fusion (Virtualization Software) (affected version not known). It has been declared as problematic. This vulnerability affects some unknown functionality of the component VNC Session Handler. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

VMware Workstation (14.x before 14.1.1, 12.x) and Fusion (10.x before 10.1.1 and 8.x) contain a denial-of-service vulnerability which can be triggered by opening a large number of VNC sessions. Note: In order for exploitation to be possible on Workstation and Fusion, VNC must be manually enabled.

The bug was discovered 03/15/2018. The weakness was released 03/15/2018 by Cisco with Cisco Talos (Website). The advisory is shared for download at vmware.com. This vulnerability was named CVE-2018-6957 since 02/14/2018. The attack can be initiated remotely. A single authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 118980 (VMware Workstation 14.x < 14.1.1 Denial of Service Vulnerability (VMSA-2018-0008)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family General and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370824 (VMware Workstation 14.x, Fusion 10.x Denial-Of-Service Vulnerability.(VMSA-2018-0008)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (118980) and SecurityFocus (BID 103431†). 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: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118980
Nessus Name: VMware Workstation 14.x < 14.1.1 Denial of Service Vulnerability (VMSA-2018-0008)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

02/14/2018 🔍
03/15/2018 +29 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/16/2018 +1 days 🔍
11/16/2018 +245 days 🔍
02/05/2021 +812 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: vmware.com
Researcher: Lilith (Cisco)
Organization: Cisco Talos
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6957 (🔍)
GCVE (CVE): GCVE-0-2018-6957
GCVE (VulDB): GCVE-100-114676
SecurityFocus: 103431 - Multiple VMware Products CVE-2018-6957 Denial of Service Vulnerability
SecurityTracker: 1040539

scip Labs: https://www.scip.ch/en/?labs.20060413

Entryinfo

Created: 03/16/2018 08:20
Updated: 02/05/2021 11:20
Changes: 03/16/2018 08:20 (64), 01/14/2020 10:59 (10), 02/05/2021 11:13 (3), 02/05/2021 11:20 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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