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V-278953

CAT II (Medium)

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

Rule ID

SV-278953r1192787_rule

STIG

Microsoft IIS 10.0 Site Security Technical Implementation Guide

Version

V2R15

CCIs

CCI-001312

Discussion

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.

Check Content

Note: If the server is hosting WSUS, this is not applicable.

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 (SA) 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

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.