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V-218781

CAT II (Medium)

Backup interactive scripts on the IIS 10.0 server must be removed.

Rule ID

SV-218781r1022700_rule

STIG

Microsoft IIS 10.0 Site Security Technical Implementation Guide

Version

V2R15

CCIs

CCI-000381

Discussion

Copies of backup files will not execute on the server, but they can be read by the anonymous user if special precautions are not taken. Such backup copies contain the same sensitive information as the actual script being executed and, as such, are useful to malicious users. Techniques and systems exist today to search web servers for such files and are able to exploit the information contained in them.

Check Content

If the website does not utilize CGI, this finding is Not Applicable.

Open the IIS 10.0 Manager.

Right-click the IIS 10.0 web site name and select "Explore".

Search for the listed script extensions

Search for the following files: *.bak, *.old, *.temp, *.tmp, *.backup, or “copy of...”.

If files with these extensions are found, this is a finding.

Fix Text

Remove the backup files from the production web server.