All Automation Controller NGINX web servers must have Web Distributed Authoring (WebDAV) disabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256950 | APWS-AT-000340 | SV-256950r960963_rule | CCI-000381 | medium |
| Description | ||||
| Automation Controller NGINX web servers can be installed with functionality that, just by its nature, is not secure. Web Distributed Authoring (WebDAV) is an extension to the HTTP protocol that, when developed, was meant to allow users to create, change, and move documents on a server, typically a web server or web share. Allowing this functionality, development, and deployment is much easier for web authors. WebDAV is not widely used and has serious security concerns because it may allow clients to modify unauthorized files on the web server. | ||||
| STIG | Date | |||
| Red Hat Ansible Automation Controller Web Server Security Technical Implementation Guide | 2024-08-27 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-7
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.4.6
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000381
1.00
- DISA · 2 · disa_xccdf · related
Details
Check Text (C-256950r960963_chk)
As a system administrator, for each Automation Controller NGINX web server host, check the Automation Controller NGINX web server configuration for WebDAV modules:
disallowed_modules=(nginx-dav-ext-module headers-more-nginx-module) ; echo "${disallowed_modules[*]}" | tr ' ' '\n' >tempfile ; nginx -V 2>&1 | grep module | tr ' ' '\n' | grep module | grep -v modules-path | grep -Ff tempfile && echo "FAILED"; rm -f tempfile
If "FAILED" is displayed, this is a finding.
Check the Automation Controller NGINX web server configuration for WebDAV modules for disallowed WebDAV verbs, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK:
NGINXCONF=`nginx -V 2>&1 | tr ' ' '\n' | sed -ne '/conf-path/{s/.*conf-path=\(.*\)/\1/;p}' ` ;
grep dev_(.*)methods $NGINXCONF | grep 'COPY|MOVE|MKCO|PROPFIND|PROPPATCH|LOCK|UNLOCK' && echo 'FAILED'
If "FAILED" is displayed, this is a finding.
Fix Text (F-60567r902363_fix)
As a system administrator, for each Automation Controller nginx web server host, remove all WebDAV modules from the NGINX configuration file (nominally /etc/nginx/nginx.conf).
Reload the NGINX server configurations for all NGINX processes:
$ pkill -HUP nginx