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Check: IIST-SV-000139

Microsoft IIS 10.0 Server STIG: IIST-SV-000139 (in versions v3 r2 through v1 r0.1)

Title

The IIS 10.0 web server Indexing must only index web content. (Cat II impact)

Discussion

The indexing service can be used to facilitate a search function for websites. Enabling indexing may facilitate a directory traversal exploit and reveal unwanted information to a malicious user. Indexing must be limited to web document directories only.

Check Content

Access the IIS 10.0 Web Server. Access an administrator command prompt and type "regedit <enter>" to access the server's registry. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ContentIndex\Catalogs\. If this key exists, then indexing is enabled. If the key does not exist, this check is Not Applicable. Review the Catalog keys to determine if directories other than web document directories are being indexed. If so, this is a finding.

Fix Text

Run MMC. Add the Indexing Service snap-in. Edit the indexed directories to only include web document directories.

Additional Identifiers

Rule ID: SV-218809r961167_rule

Vulnerability ID: V-218809

Group Title: SRG-APP-000266-WSR-000142

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001312	Generate error messages that provide information necessary for corrective actions without revealing information that could be exploited.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
SI-11	Error Handling