VDB-175851 · CVE-2021-21986 · GCVE-0-2021-21986

VMware vCenter Server 6.4/6.5/7.0 SAN Health Check improper authentication

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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in VMware vCenter Server 6.4/6.5/7.0. Impacted is an unknown function of the component SAN Health Check/Site Recovery/Lifecycle Manager/Cloud Director Availability. Performing a manipulation results in improper authentication. This vulnerability is identified as CVE-2021-21986. The attack can be initiated remotely. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical has been found in VMware vCenter Server 6.4/6.5/7.0 (Server Management Software). This affects an unknown code of the component SAN Health Check/Site Recovery/Lifecycle Manager/Cloud Director Availability. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 05/26/2021 as VMSA-2021-0010/KB83829. It is possible to read the advisory at vmware.com. This vulnerability is uniquely identified as CVE-2021-21986. The technical details are unknown and an exploit is not publicly available.

Applying the patch 6.5 U3p/6.7 U3n/7.0 U2b is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for 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: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 6.5 U3p/6.7 U3n/7.0 U2b

Timelineinfo

01/04/2021 🔍
05/26/2021 +141 days 🔍
05/26/2021 +0 days 🔍
05/29/2021 +3 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: VMSA-2021-0010/KB83829
Status: Confirmed

CVE: CVE-2021-21986 (🔍)
GCVE (CVE): GCVE-0-2021-21986
GCVE (VulDB): GCVE-100-175851
scip Labs: https://www.scip.ch/en/?labs.20060413

Entryinfo

Created: 05/26/2021 19:06
Updated: 05/29/2021 14:45
Changes: 05/26/2021 19:06 (40), 05/29/2021 14:45 (5)
Complete: 🔍
Cache ID: 216::103