HTTPAPI Server version must be removed from the HTTP Response Header information.

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HTTPAPI Server version must be removed from the HTTP Response Header information.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-241788	IIST-SV-000210	SV-241788r961167_rule		Low

Description
HTTP Response Headers contain information that could enable an attacker to gain access to an information system. Failure to prevent the sending of certain HTTP Response Header information to remote requesters exposes internal configuration information to potential attackers.

STIG	Date
Microsoft IIS 10.0 Server Security Technical Implementation Guide	2024-06-10

Details

Check Text ( C-45064r766899_chk )
Open Registry Editor. Navigate to “HKLM\System\CurrentControlSet\Services\HTTP\Parameters” Verify “DisableServerHeader” is set to “1”. If REG_DWORD DisableServerHeader is not set to 1, this is a finding. If the System Administrator can show that Server Version information has been removed via other means, such as using a rewrite outbound rule, this is not a finding.

Fix Text (F-45023r766900_fix)
Navigate to “HKLM\System\CurrentControlSet\Services\HTTP\Parameters”. Create REG_DWORD “DisableServerHeader” and set it to “1”. Note: This can be performed multiple ways, this is an example.