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The vCenter PostgreSQL service must limit the number of concurrent sessions.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-259166VCPG-80-000001SV-259166r960735_ruleCCI-000054medium
Description
Database management includes the ability to control the number of users and user sessions utilizing a database management system (DBMS). Unlimited concurrent connections to the DBMS could allow a successful denial-of-service (DoS) attack by exhausting connection resources, and a system can also fail or be degraded by an overload of legitimate users. Limiting the number of concurrent sessions per user is helpful in reducing these risks. VMware Postgres as deployed on the vCenter Service Appliance (VCSA) comes preconfigured with a "max_connections" limit that is appropriate for all tested, supported scenarios. The out-of-the-box configuration is dynamic, based on a lower limit plus allowances for the resources assigned to VCSA and the deployment size. However, this number will always be between 100 and 1000 (inclusive).
STIGDate
VMware vSphere 8.0 vCenter Appliance PostgreSQL Security Technical Implementation Guide2026-06-02

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (11) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

HRS-02Position Categorization
1.00
HRS-11Separation of Duties (SoD)
1.00
IAC-01Identity & Access Management (IAM)
1.00
IAC-01.2Authenticate, Authorize and Audit (AAA)
1.00
IAC-02Identification & Authentication for Organizational Users
1.00
IAC-03Identification & Authentication for Non-Organizational Users
1.00
IAC-04Identification & Authentication for Devices
1.00
IAC-05Identification & Authentication for Third-Party Technology Assets, Applications and/or Services (TAAS)
1.00
IAC-08Role-Based Access Control (RBAC)
1.00
IAC-21Least Privilege
1.00

+1 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (28) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00
AC-7Unsuccessful Logon Attempts
1.00
AU-9Protection of Audit Information
1.00

+18 more (top 10 by confidence shown)

CCI1 mapping
CCI-000054
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.AA-05
1.00

Who does this work

8 NICE work roles and 6 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-259166r960735_chk)

At the command prompt, run the following command: # /opt/vmware/vpostgres/current/bin/psql -U postgres -A -t -c "SHOW max_connections;" If the returned number is not greater than or equal to 100 and less than or equal to 1000, this is a finding.

Fix Text (F-62815r935401_fix)

At the command prompt, run the following command: # vmon-cli --restart vmware-vpostgres Note: Restarting the service runs the "pg_tuning" script that will configure "max_connections" to the appropriate value based on the allocated memory for vCenter.