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The vCenter Envoy service must set a limit on remote connections.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-259165VCRP-80-000098SV-259165r960735_ruleCCI-000054medium
Description
Envoy client connections must be limited to preserve system resources and continue servicing connections without interruption. Without a limit set, the system would be vulnerable to a trivial denial-of-service attack where connections are created en masse and vCenter resources are entirely consumed. Envoy comes hard coded with a tested and supported value for "maxRemoteHttpsConnections" and "maxRemoteHttpConnections" that must be verified and maintained.
STIGDate
VMware vSphere 8.0 vCenter Appliance Envoy 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-259165r960735_chk)

At the command prompt, run the following commands: # xmllint --xpath '/config/envoy/L4Filter/maxRemoteHttpsConnections/text()' /etc/vmware-rhttpproxy/config.xml # xmllint --xpath '/config/envoy/L4Filter/maxRemoteHttpConnections/text()' /etc/vmware-rhttpproxy/config.xml Example result: 2048 or XPath set is empty If the output is not "2048" or "XPath set it empty", this is a finding. Note: If "XPath set is empty" is returned the default values are in effect and is 2048.

Fix Text (F-62814r935398_fix)

Navigate to and open: /etc/vmware-rhttpproxy/config.xml Locate the <config>/<envoy>/<L4Filter> block and configure it as follows: <maxRemoteHttpsConnections>2048</maxRemoteHttpsConnections> <maxRemoteHttpConnections>2048</maxRemoteHttpConnections> Restart the service for changes to take effect. # vmon-cli --restart rhttpproxy