VDB-111774 · CVE-2017-4950 · BID 102490

VMware Workstation/Fusion NAT Service integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

A vulnerability, which was classified as critical, was found in VMware Workstation and Fusion (Virtualization Software) (unknown version). Affected is an unknown code block of the component NAT Service. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

VMware Workstation and Fusion contain an integer overflow vulnerability in VMware NAT service when IPv6 mode is enabled. This issue may lead to an out-of-bound read which can then be used to execute code on the host in conjunction with other issues. Note: IPv6 mode for VMNAT is not enabled by default.

The bug was discovered 01/10/2018. The weakness was shared 01/11/2018 with Tencent (Website). The advisory is available at vmware.com. This vulnerability is traded as CVE-2017-4950 since 12/26/2016. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 105783 (VMware Player 12.x < 12.5.9 / 14.x < 14.1.1 Multiple Vulnerabilities (VMSA-2018-0004) (VMSA-2018-0005) (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370721 (VMware Workstation Pro and Player Multiple Vulnerabilities.(VMSA-2018-0005)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105783). The entry VDB-111773 is related to this item.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

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

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105783
Nessus Name: VMware Player 12.x < 12.5.9 / 14.x < 14.1.1 Multiple Vulnerabilities (VMSA-2018-0004) (VMSA-2018-0005) (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/26/2016 🔍
01/09/2018 +379 days 🔍
01/10/2018 +1 days 🔍
01/10/2018 +0 days 🔍
01/11/2018 +1 days 🔍
01/11/2018 +0 days 🔍
01/12/2018 +1 days 🔍
01/12/2018 +0 days 🔍
01/29/2021 +1113 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: vmware.com
Researcher: WenQunWang
Organization: Tencent
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-4950 (🔍)
SecurityTracker: 1040161
SecurityFocus: 102490 - Multiple VMware Products CVE-2017-4950 Integer Overflow Vulnerability

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

Entryinfo

Created: 01/12/2018 08:05
Updated: 01/29/2021 21:53
Changes: 01/12/2018 08:05 (67), 12/22/2019 15:23 (7), 01/29/2021 21:50 (2), 01/29/2021 21:53 (1)
Complete: 🔍
Cache ID: 18:F77:103

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