add userdir same-origin warnings to mod_userdir

Submitted By: Hanno Böck <hanno hboeck.de>

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1875785 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/mod/mod_userdir.xml b/docs/manual/mod/mod_userdir.xml
index d30cd819fb837d042095ed4af7ecd440f65bb687..0fe76f5f7694433ec64bebd0156b391907256c54 100644 (file)
--- a/docs/manual/mod/mod_userdir.xml
+++ b/docs/manual/mod/mod_userdir.xml
@@ -29,6 +29,14 @@
 <identifier>userdir_module</identifier>
 
 <summary>
+<note type="warning">By using this module you are allowing multiple users
+to host content within the same origin. The same origin policy is a key
+principle of Javascript and web security. By hosting web pages in the same
+origin these pages can read and control each other and security issues in
+one page may affect another. This is particularly dangerous in combination
+with web pages involving dynamic content and authentication and when
+your users don't necessarily trust each other.</note>
+
 <p>This module allows user-specific directories to be accessed using the
 <code>http://example.com/~user/</code> syntax.</p>
 </summary>