VDB-104577 · CVE-2017-4919 · VMSA-2017-0012

VMware vCenter Server 5.5/6.0/6.5 VIX API access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in VMware vCenter Server 5.5/6.0/6.5. Affected by this vulnerability is an unknown functionality of the component VIX API. Performing a manipulation results in access control. This vulnerability is reported as CVE-2017-4919. The attack is possible to be carried out remotely. No exploit exists. It is advisable to use the suggested workaround.

Detailsinfo

A vulnerability was found in VMware vCenter Server 5.5/6.0/6.5 (Server Management Software). It has been classified as critical. This affects an unknown code of the component VIX API. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

VMware vCenter Server 5.5, 6.0, 6.5 allows vSphere users with certain, limited vSphere privileges to use the VIX API to access Guest Operating Systems without the need to authenticate.

The bug was discovered 07/27/2017. The weakness was disclosed 07/27/2017 as VMSA-2017-0012 (Website). The advisory is shared at vmware.com. This vulnerability is uniquely identified as CVE-2017-4919 since 12/26/2016. It is possible to initiate the attack remotely. A authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The best possible mitigation is suggested to be Workaround.

The vulnerability is also documented in the databases at SecurityFocus (BID 100102†) and SecurityTracker (ID 1039004†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Server Management Software

Vendor

VMware

Name

vCenter Server

Version

License

commercial

Website

Vendor: https://www.vmware.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.0
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Workaround
Status: 🔍

0-Day Time: 🔍

Workaround: Disable VIX API VM Direct Access

Timelineinfo

12/26/2016 🔍
07/27/2017 +213 days 🔍
07/27/2017 +0 days 🔍
07/27/2017 +0 days 🔍
07/27/2017 +0 days 🔍
07/28/2017 +1 days 🔍
07/28/2017 +0 days 🔍
01/06/2021 +1258 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: VMSA-2017-0012
Researcher: Ofri Ziv, Itamar Tal
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-4919 (🔍)
GCVE (CVE): GCVE-0-2017-4919
GCVE (VulDB): GCVE-100-104577
SecurityFocus: 100102 - VMware vCenter Server CVE-2017-4919 Local Authentication Bypass Vulnerability
SecurityTracker: 1039004

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

Entryinfo

Created: 07/28/2017 09:55
Updated: 01/06/2021 15:18
Changes: 07/28/2017 09:55 (65), 11/01/2019 19:34 (5), 01/06/2021 15:18 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.