The Security Token Service must set the welcome-file node to a default web page.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256766 | VCST-70-000022 | SV-256766r889268_rule | CCI-001312 | medium |
| Description | ||||
| Enumeration techniques, such as Uniform Resource Locator (URL) parameter manipulation, rely on being able to obtain information about the web server's directory structure by locating directories without default pages. In this scenario, the web server will display to the user a listing of the files in the directory being accessed. By having a default hosted application web page, the anonymous web user will not obtain directory browsing information or an error message that reveals the server type and version. Ensuring every document directory has an "index.jsp" (or equivalent) file is one approach to mitigating the vulnerability. | ||||
| STIG | Date | |||
| VMware vSphere 7.0 vCenter Appliance STS Security Technical Implementation Guide | 2023-06-15 | |||
Details
Check Text (C-256766r889268_chk)
At the command prompt, run the following command:
# xmllint --format /usr/lib/vmware-sso/vmware-sts/conf/web.xml | sed '2 s/xmlns=".*"//g' | xmllint --xpath '/web-app/welcome-file-list' -
Expected result:
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
If the output of the command does not match the expected result, this is a finding.
Fix Text (F-60384r889267_fix)
Navigate to and open:
/usr/lib/vmware-sso/vmware-sts/conf/web.xml
Add the following section under the <web-apps> node:
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
Restart the service with the following command:
# vmon-cli --restart sts