In the event a secure Session Initiation Protocol (SIP) connection fails, the connection must be restricted from resorting to the unencrypted HTTP.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-70905	DTOO422	SV-85529r1_rule	CCI-001184	medium
Description
Prevents from HTTP being used for SIP connection in case TLS or TCP fail.
STIG			Date
Microsoft Skype for Business 2016 Security Technical Implementation Guide			2016-11-02

Related Frameworks

1 mapping across 4 frameworks

SCF0 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.

NET-09Session Integrity

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)
SCF Secure Traceability Relationship Mapping (STRM)2026.2equal to

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (30) 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-17(2)Protection of Confidentiality and Integrity Using Encryption

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)V1R1our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)V1R1intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

AU-10(1)Association of Identities

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)2our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)2intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

AU-10(2)Validate Binding of Information Producer Identity

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)2our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)2intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

AU-9(3)Cryptographic Protection

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)2our copyintersects(normalised)DISA STIG Benchmark (XCCDF)V2R6our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)2intersects(normalised)DISA STIG Benchmark (XCCDF)V2R6intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

CM-14Signed Components

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)V2R2our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)V2R2intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

CM-5(3)Signed Components

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)V2R2our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)V2R2intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

CM-6Configuration Settings

1.00

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DISA STIG Benchmark (XCCDF)V1R2our copyintersects(normalised)
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DISA CCI List2025-01-23equal to(normalised)

CM-7Least Functionality

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DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)V1R1our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)V1R1intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

IA-2(1)Multi-factor Authentication to Privileged Accounts

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)1our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

IA-2(12)Acceptance of PIV Credentials

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DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA STIG Benchmark (XCCDF)1our copyintersects(normalised)
DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)

+20 more (top 10 by confidence shown)

NIST 800-1710 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.

3.13.15

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)
DISA CCI List2025-01-23equal to(normalised)
NIST SP 800-171 Rev 2, Appendix DRev 2 (Feb 2020, errata Jan 2021)equal to(normalised)

CCI1 mapping

CCI-001184

1.00

DISA STIG Benchmark (XCCDF)1intersects(normalised)

Details

Check Text (C-85529r1_chk)

Verify the policy value for Computer Configuration -> Administrative Templates -> Skype for Business 2016 -> Microsoft Lync Feature Policies "Disable HTTP fallback for SIP connection" is set to "Enabled". Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\office\16.0\lync Criteria: If the value disablehttpconnect is REG_DWORD = 1, this is not a finding.

Fix Text (F-77237r1_fix)

Set the policy value for Computer Configuration -> Administrative Templates -> Skype for Business 2016 -> Microsoft Lync Feature Policies "Disable HTTP fallback for SIP connection" to "Enabled".