Ensure URL in all Service subclasses are valid

Signed-off-by: Rémy Coutable <remy@rymai.me>

1 files changed, 33 insertions, 15 deletions

diff --git a/app/helpers/issues_helper.rb b/app/helpers/issues_helper.rb
index afe1e11a0da..198d39455d7 100644
--- a/app/helpers/issues_helper.rb
+++ b/app/helpers/issues_helper.rb
@@ -16,31 +16,49 @@ module IssuesHelper
   def url_for_project_issues(project = @project, options = {})
     return '' if project.nil?
 
-    if options[:only_path]
-      project.issues_tracker.project_path
-    else
-      project.issues_tracker.project_url
-    end
+    url =
+      if options[:only_path]
+        project.issues_tracker.project_path
+      else
+        project.issues_tracker.project_url
+      end
+
+    # Ensure we return a valid URL to prevent possible XSS.
+    URI.parse(url).to_s
+  rescue URI::InvalidURIError
+    ''
   end
 
   def url_for_new_issue(project = @project, options = {})
     return '' if project.nil?
 
-    if options[:only_path]
-      project.issues_tracker.new_issue_path
-    else
-      project.issues_tracker.new_issue_url
-    end
+    url =
+      if options[:only_path]
+        project.issues_tracker.new_issue_path
+      else
+        project.issues_tracker.new_issue_url
+      end
+
+    # Ensure we return a valid URL to prevent possible XSS.
+    URI.parse(url).to_s
+  rescue URI::InvalidURIError
+    ''
   end
 
   def url_for_issue(issue_iid, project = @project, options = {})
     return '' if project.nil?
 
-    if options[:only_path]
-      project.issues_tracker.issue_path(issue_iid)
-    else
-      project.issues_tracker.issue_url(issue_iid)
-    end
+    url =
+      if options[:only_path]
+        project.issues_tracker.issue_path(issue_iid)
+      else
+        project.issues_tracker.issue_url(issue_iid)
+      end
+
+    # Ensure we return a valid URL to prevent possible XSS.
+    URI.parse(url).to_s
+  rescue URI::InvalidURIError
+    ''
   end
 
   def bulk_update_milestone_options