CVE-2014-3840 (published 2014-05-27T13:55Z)

Multiple cross-site scripting (XSS) vulnerabilities in apps/common/templates/calculate_form_title.html in Mayan EDMS 0.13 allow remote authenticated users to inject arbitrary web script or HTML via a (1) tag or the (2) title of a source in a Staging folder, (3) Name field in a bootstrap setup, or Title field in a (4) smart link or (5) web form.

Severity: LOW
CVSS v2 base score: 3.5 (AV:N/AC:M/Au:S/C:N/I:P/A:N)

Weakness information:
cwe_id: CWE-79
cwe_name: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
description: The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
extended_description: 
            Cross-site scripting (XSS) vulnerabilities occur when:
            
               Untrusted data enters a web application, typically from a web request.
               The web application dynamically generates a web page that contains this untrusted data.
               During page generation, the application does not prevent the data from containing content that is executable by a web browser, such as JavaScript, HTML tags, HTML attributes, mouse events, Flash, ActiveX, etc.
               A victim visits the generated web page through a web browser, which contains malicious script that was injected using the untrusted data.
               Since the script comes from a web page that was sent by the web server, the victim's web browser executes the malicious script in the context of the web server's domain.
               This effectively violates the intention of the web browser's same-origin policy, which states that scripts in one domain should not be able to access resources or run code in a different domain.
            
            There are three main kinds of XSS:
            
               
                  Type 1: Reflected XSS (or Non-Persistent) - 
         			The server reads data directly from the HTTP request and reflects it back in the HTTP response. Reflected XSS exploits occur when an attacker causes a victim to supply dangerous content to a vulnerable web application, which is then reflected back to the victim and executed by the web browser. The most common mechanism for delivering malicious content is to include it as a parameter in a URL that is posted publicly or e-mailed directly to the victim. URLs constructed in this manner constitute the core of many phishing schemes, whereby an attacker convinces a victim to visit a URL that refers to a vulnerable site. After the site reflects the attacker's content back to the victim, the content is executed by the victim's browser.
               
                  Type 2: Stored XSS (or Persistent) - 
               The application stores dangerous data in a database, message forum, visitor log, or other trusted data store. At a later time, the dangerous data is subsequently read back into the application and included in dynamic content. From an attacker's perspective, the optimal place to inject malicious content is in an area that is displayed to either many users or particularly interesting users. Interesting users typically have elevated privileges in the application or interact with sensitive data that is valuable to the attacker. If one of these users executes malicious content, the attacker may be able to perform privileged operations on behalf of the user or gain access to sensitive data belonging to the user. For example, the attacker might inject XSS into a log message, which might not be handled properly when an administrator views the logs.
            
               
                  Type 0: DOM-Based XSS - 
               In DOM-based XSS, the client performs the injection of XSS into the page; in the other types, the server performs the injection. DOM-based XSS generally involves server-controlled, trusted script that is sent to the client, such as Javascript that performs sanity checks on a form before the user submits it. If the server-supplied script processes user-supplied data and then injects it back into the web page (such as with dynamic HTML), then DOM-based XSS is possible.
            
            
            Once the malicious script is injected, the attacker can perform a variety of malicious activities. The attacker could transfer private information, such as cookies that may include session information, from the victim's machine to the attacker. The attacker could send malicious requests to a web site on behalf of the victim, which could be especially dangerous to the site if the victim has administrator privileges to manage that site. Phishing attacks could be used to emulate trusted web sites and trick the victim into entering a password, allowing the attacker to compromise the victim's account on that web site. Finally, the script could exploit a vulnerability in the web browser itself possibly taking over the victim's machine, sometimes referred to as "drive-by hacking."
            In many cases, the attack can be launched without the victim even being aware of it. Even with careful users, attackers frequently use a variety of methods to encode the malicious portion of the attack, such as URL encoding or Unicode, so the request looks less suspicious.
         
         

Fix information:
repo_url: https://github.com/mayan-edms/mayan-edms
commit_details: repo_url: https://github.com/mayan-edms/mayan-edms
author: Roberto Rosario
author_date: 2014-05-22 17:27:06-04:00
msg: Remove the striptags functionality, fixes some instances of XSS, issue #3
repository: repo_url: https://github.com/mayan-edms/mayan-edms
repo_name: mayan-edms/Mayan-EDMS
description: Free Open Source Document Management System (mirror, no pull request or issues)
repo_language: Python
owner: mayan-edms
file_changes: filename: calculate_form_title.html
change_type: ModificationType.MODIFY
diff: @@ -1,10 +1,6 @@
 {% load i18n %}
 {% if title %}
-    {% if striptags %}
-        {{ title|capfirst|striptags }}
-    {% else %}
-        {{ title|capfirst|safe }}
-    {% endif %}
+    {{ title|capfirst }}
 {% else %}
     {% if read_only %}
         {% if object_name %}
@@ -15,9 +11,9 @@
     {% else %}
         {% if object %}
             {% if object_name %}
-                {% blocktrans %}Edit {{ object_name }}:{% endblocktrans %} {% if not striptags %}<a href="{{ object.get_absolute_url }}">{% endif %}{{ object|capfirst }}{% if not striptags %}</a>{% endif %}
+                {% blocktrans with object as object and object_name as object_name %}Edit {{ object_name }}: {{ object }}{% endblocktrans %}
             {% else %}
-                {% trans "Edit" %}: {% if not striptags %}<a href="{{ object.get_absolute_url }}">{% endif %}{{ object|capfirst }}{% if not striptags %}</a>{% endif %}
+                {% blocktrans with object as object %}Edit: {{ object }}{% endblocktrans %}
             {% endif %}
         {% else %}
             {% if object_name %}
@@ -25,6 +21,6 @@
             {% else %}
                 {% trans "Create" %}
             {% endif %}
-        {% endif %}                
+        {% endif %}
     {% endif %}
 {% endif %}

programming_language: HTML
filename: generic_detail.html
change_type: ModificationType.MODIFY
diff: @@ -2,15 +2,15 @@
 {% load i18n %}
 {% load subtemplates_tags %}
 
-{% block title %} :: {% with "true" as read_only %}{% with "true" as striptags %}{% include "calculate_form_title.html" %}{% endwith %}{% endwith %}{% endblock %}
+{% block title %} :: {% with "true" as read_only %}{% include "calculate_form_title.html" %}{% endwith %}{% endblock %}
 
 {% block sidebar %}
     {% for subtemplate in sidebar_subtemplates %}
         <div class="generic_subform">
             {% include subtemplate %}
-        </div>        
+        </div>
     {% endfor %}
-  
+
     {% for subtemplate in sidebar_subtemplates_list %}
         {% with "true" as side_bar %}
             {% if subtemplate.form %}
@@ -26,18 +26,18 @@
             {% endif %}
                 </div>
                 {% if subtemplate.grid_clear or not subtemplate.grid %}
-                    <div class=""></div> 
+                    <div class=""></div>
             {% endif %}
         {% endwith %}
-    {% endfor %}     
+    {% endfor %}
 {% endblock %}
 
 {% block stylesheets %}
     <style type="text/css">
-        #subform form  textarea, 
+        #subform form  textarea,
         #subform form  select option,
-        #subform form  input, 
-        #subform form  select, 
+        #subform form  input,
+        #subform form  select,
         #subform form  input { background: none; color: black; border: none; }
     </style>
 {% endblock %}
@@ -51,14 +51,14 @@
                 </div>
             </div>
             {% if grid_clear or not grid %}
-                <div class=""></div> 
+                <div class=""></div>
             {% endif %}
         {% endwith %}
     {% endif %}
-    
+
     <div class="container_12">
         {% for subtemplate in subtemplates_list %}
-            <div class="grid_{{ subtemplate.grid|default:12 }}">       
+            <div class="grid_{{ subtemplate.grid|default:12 }}">
                 {% with "true" as read_only %}
                     {% render_subtemplate subtemplate.name subtemplate.context as rendered_subtemplate %}
                     <div class="generic_subform">
@@ -67,10 +67,10 @@
                 {% endwith %}
             </div>
             {% if subtemplate.grid_clear or not subtemplate.grid %}
-                <div class="clear"></div> 
+                <div class="clear"></div>
             {% endif %}
          {% endfor %}
-    </div>    
-    
+    </div>
+
 {% endblock %}
 

programming_language: HTML
filename: generic_form.html
change_type: ModificationType.MODIFY
diff: @@ -1,7 +1,7 @@
 {% extends "base.html" %}
 {% load subtemplates_tags %}
 
-{% block title %} :: {% with "true" as striptags %}{% include "calculate_form_title.html" %}{% endwith %}{% endblock %}
+{% block title %} :: {% include "calculate_form_title.html" %}{% endblock %}
 
 {% block sidebar %}
     {% for subtemplate in sidebar_subtemplates_list %}
@@ -25,10 +25,10 @@
             {% include "generic_form_subtemplate.html" %}
         </div>
     {% endif %}
-                             
+
 <div class="container_12">
     {% for subtemplate in subtemplates_list %}
-        <div class="grid_{{ subtemplate.grid|default:12 }}">       
+        <div class="grid_{{ subtemplate.grid|default:12 }}">
             {% if subtemplate.form %}
                 {% render_subtemplate subtemplate.name subtemplate.context as rendered_subtemplate %}
                     <div class="generic_subform">
@@ -40,7 +40,7 @@
             {% endif %}
         </div>
         {% if subtemplate.grid_clear or not subtemplate.grid %}
-            <div class="clear"></div> 
+            <div class="clear"></div>
         {% endif %}
      {% endfor %}
 </div>

programming_language: HTML
filename: generic_list.html
change_type: ModificationType.MODIFY
diff: @@ -3,7 +3,7 @@
 {% load navigation_tags %}
 {% load subtemplates_tags %}
 
-{% block title %} :: {% blocktrans with title|striptags as stripped_title %}List of {{ stripped_title }}{% endblocktrans %}{% endblock %}
+{% block title %} :: {% blocktrans with title as title %}List of {{ title }}{% endblocktrans %}{% endblock %}
 {#{% block secondary_links %}{{ secondary_links|safe }}{% endblock %}#}
 
 {% block sidebar %}

programming_language: HTML
filename: generic_list_horizontal.html
change_type: ModificationType.MODIFY
diff: @@ -3,7 +3,7 @@
 {% load navigation_tags %}
 {% load subtemplates_tags %}
 
-{% block title %} :: {% blocktrans with title|striptags as stripped_title %}List of {{ stripped_title }}{% endblocktrans %}{% endblock %}
+{% block title %} :: {% blocktrans with title as title %}List of {{ title }}{% endblocktrans %}{% endblock %}
 {#{% block secondary_links %}{{ secondary_links|safe }}{% endblock %}#}
 
 {% block sidebar %}

programming_language: HTML
filename: generic_list_subtemplate.html
change_type: ModificationType.MODIFY
diff: @@ -16,8 +16,8 @@
     </h3>
     <div class="content">
         <p>
-{% else %}    
-    {% autopaginate object_list %} 
+{% else %}
+    {% autopaginate object_list %}
     <div class="content">
     <h2 class="title">
         {% ifnotequal page_obj.paginator.num_pages 1 %}
@@ -53,9 +53,9 @@
                             </button>
                         </div>
                     {% endif %}
-                {% endif %}          
-            {% endif %}          
-        
+                {% endif %}
+            {% endif %}
+
             {% if scrollable_content %}
                 <div style="border: 1px solid; height: {{ scrollable_content_height }}; overflow: auto;">
             {% endif %}
@@ -78,11 +78,11 @@
 
                             {% for column in object_list.0|get_model_list_columns %}
                                 <th>{{ column.name|capfirst }}</th>
-                            {% endfor %}            
+                            {% endfor %}
 
                             {% for column in extra_columns %}
                                 <th>{{ column.name|capfirst }}</th>
-                            {% endfor %}        
+                            {% endfor %}
 
                             {% if not hide_links %}
                                 <th class="">&nbsp;</th>
@@ -91,7 +91,7 @@
                     {% endif %}
                     {% for object in object_list %}
                         <tr class="{% cycle 'odd' 'even2' %}">
-                        {% if multi_select or multi_select_as_buttons %}    
+                        {% if multi_select or multi_select_as_buttons %}
                             <td>
                             {% if multi_select_item_properties %}
                                 <input type="checkbox" class="checkbox" name="properties_{{ object|get_encoded_parameter:multi_select_item_properties }}" value="" />
@@ -117,7 +117,7 @@
                             {% else %}
                                 <td>{{ object|object_property:column.attribute }}</td>
                             {% endif %}
-                        {% endfor %}                        
+                        {% endfor %}
                         {% if not hide_columns %}
                             {% for column in object|get_model_list_columns %}
                                 <td>{{ object|object_property:column.attribute }}</td>
@@ -149,15 +149,15 @@
                             {% endif %}
                         </tr>
                     {% empty %}
-                        <tr><td colspan=99 class="tc">{% blocktrans with title|striptags as stripped_title %}There are no {{ stripped_title }}{% endblocktrans %}</td></tr>
+                        <tr><td colspan=99 class="tc">{% blocktrans with title as title %}There are no {{ title }}{% endblocktrans %}</td></tr>
                     {% endfor %}
                 </tbody>
             </table>
-            
+
             {% if scrollable_content %}
-                </div>            
-            {% endif %}            
-            
+                </div>
+            {% endif %}
+
             {% if object_list %}
                 {% if multi_select or multi_select_as_buttons %}
                     {% if multi_select_as_buttons %}
@@ -179,13 +179,13 @@
                             </button>
                         </div>
                     {% endif %}
-                {% endif %}  
-            {% endif %}  
+                {% endif %}
+            {% endif %}
         </form>
         {% paginate %}
-        
+
         {% if side_bar %}
             </p>
-        {% endif %} 
+        {% endif %}
     </div>
 </div>

programming_language: HTML