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The vCenter UI service must limit the number of maximum concurrent connections permitted.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-259104VCUI-80-000001SV-259104r960735_ruleCCI-000054medium
Description
Resource exhaustion can occur when an unlimited number of concurrent requests are allowed on a website, facilitating a denial-of-service attack. Unless the number of requests is controlled, the web server can consume enough system resources to cause a system crash. Mitigating this kind of attack will include limiting the number of concurrent HTTP/HTTPS requests. In Tomcat, each incoming request requires a thread for the duration of that request. If more simultaneous requests are received than can be handled by the currently available request processing threads, additional threads will be created up to the value of the maxThreads attribute. Satisfies: SRG-APP-000001-AS-000001, SRG-APP-000435-AS-000163
STIGDate
VMware vSphere 8.0 vCenter Appliance User Interface (UI) Security Technical Implementation Guide2026-05-23

Related Frameworks

2 mappings across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (24) 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

+14 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (59) 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-17(9)Disconnect or Disable Access
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-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00

+49 more (top 10 by confidence shown)

CCI2 mappings
CCI-000054
1.00
CCI-002385
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) 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.

DE.CM-01
1.00
PR.AA-05
1.00
PR.IR-01
1.00
PR.IR-04
0.50

Who does this work

16 NICE work roles and 9 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-259104r960735_chk)

At the command prompt, run the following command: # xmllint --xpath '/Server/Service/Connector[@port="${http.port}"]/@maxThreads' /usr/lib/vmware-vsphere-ui/server/conf/server.xml Expected result: maxThreads="800" If the output does not match the expected result, this is a finding.

Fix Text (F-62753r935215_fix)

Navigate to and open: /usr/lib/vmware-vsphere-ui/server/conf/server.xml Navigate to the <Connector> node and configure with the value "maxThreads="800"". Restart the service with the following command: # vmon-cli --restart vsphere-ui