VDB-110938 · CVE-2017-4943 · Qualys 216141

VMware vCenter Server Appliance up to 6.5 showlog Plugin access control

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability has been found in VMware vCenter Server Appliance up to 6.5 (Server Management Software) and classified as critical. This vulnerability affects some unknown functionality of the component showlog Plugin. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

VMware vCenter Server Appliance (vCSA) (6.5 before 6.5 U1d) contains a local privilege escalation vulnerability via the 'showlog' plugin. Successful exploitation of this issue could result in a low privileged user gaining root level privileges over the appliance base OS.

The bug was discovered 12/19/2017. The weakness was presented 12/20/2017 (Website). The advisory is available at vmware.com. This vulnerability was named CVE-2017-4943 since 12/26/2016. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 105410 (VMSA-2017-0021 : VMware ESXi, vCenter Server Appliance, Workstation and Fusion updates address multiple security vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family VMware ESX Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 216141 (VMware vCenter Server Appliance 6.5 Update 1d Missing (VMSA-2017-0021)).

Upgrading to version 6.5 U1d eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105410). See 110935, 110937 and 110936 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105410
Nessus Name: VMSA-2017-0021 : VMware ESXi, vCenter Server Appliance, Workstation and Fusion updates address multiple security vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: vCenter Server Appliance 6.5 U1d

Timelineinfo

12/26/2016 🔍
12/19/2017 +358 days 🔍
12/19/2017 +0 days 🔍
12/20/2017 +1 days 🔍
12/20/2017 +0 days 🔍
12/21/2017 +1 days 🔍
12/21/2017 +0 days 🔍
01/27/2021 +1133 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: vmware.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-4943 (🔍)
SecurityTracker: 1040026

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

Entryinfo

Created: 12/21/2017 08:47
Updated: 01/27/2021 17:22
Changes: 12/21/2017 08:47 (68), 12/17/2019 08:43 (3), 01/27/2021 17:22 (2)
Complete: 🔍

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