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Commit c6ed8edf by Robert Speicher
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Merge branch '17298-wiki-xss' into 'master'

Forbid scripting for wiki files Wiki files (not pages - files in the repo) are just sent to the browser with whatever content-type the mime_types gem assigns to them based on their extension. As this is from the same domain as the GitLab application, this is an XSS vulnerability. Set a CSP forbidding all sources for scripting, CSS, XHR, etc. on these files. Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/17298. See merge request !1969
parents 0ca7b3ba 1cda245c
Showing with 3 additions and 0 deletions
app/controllers/projects/wikis_controller.rb
...@@ -16,6 +16,9 @@ class Projects::WikisController < Projects::ApplicationController ...@@ -16,6 +16,9 @@ class Projects::WikisController < Projects::ApplicationController
if @page if @page
render 'show' render 'show'
elsif file = @project_wiki.find_file(params[:id], params[:version_id]) elsif file = @project_wiki.find_file(params[:id], params[:version_id])
response.headers['Content-Security-Policy'] = "default-src 'none'"
response.headers['X-Content-Security-Policy'] = "default-src 'none'"
if file.on_disk? if file.on_disk?
send_file file.on_disk_path, disposition: 'inline' send_file file.on_disk_path, disposition: 'inline'
else else
......
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