kallithea Changeset - 9beef1d91c4c

Changeset - 9beef1d91c4c

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Mads Kiilerich - 7 years ago 2019-02-27 02:23:26
mads@kiilerich.com

pullrequests: prevent XSS when 'Potential Reviewers' are selected and first and last names cannot be trusted

The user information passed to autocompleteFormatter from select2 is the raw
data which might contain HTML markup controlled by the user.

That could cause XSS issues, already when adding rogue users as reviewers on a PR.

To avoid that, make sure select2 use the default escapeMarkup function. In
addReviewMember, use .html_escape when expanding the reviewer template.

1 file changed with 1 insertions and 4 deletions:

kallithea/public/js/base.js

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kallithea/public/js/base.js

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@@ @@ -1125,75 +1125,73 @@ var SimpleUserAutoComplete = function ($ @@
                 data: {
                     key: element.val()
                 },
                 success: function(data){
                   callback(data.results[0]);
+                }
             });
         },
         minimumInputLength: 1,
         ajax: {
             url: pyroutes.url('users_and_groups_data'),
             dataType: 'json',
             data: function(term, page){
               return {
                 query: term
               };
             },
             results: function (data, page){
               return data;
             },
             cache: true
         },
         formatSelection: autocompleteFormatter,
         formatResult: autocompleteFormatter,
         escapeMarkup: function(m) { return m; },
         id: function(item) { return item.nname; },
     });
+}
 var MembersAutoComplete = function ($inputElement, $typeElement) {
     $inputElement.select2({
         placeholder: $inputElement.attr('placeholder'),
         minimumInputLength: 1,
         ajax: {
             url: pyroutes.url('users_and_groups_data'),
             dataType: 'json',
             data: function(term, page){
               return {
                 query: term,
                 types: 'users,groups'
               };
             },
             results: function (data, page){
               return data;
             },
             cache: true
         },
         formatSelection: autocompleteFormatter,
         formatResult: autocompleteFormatter,
         escapeMarkup: function(m) { return m; },
         id: function(item) { return item.type == 'user' ? item.nname : item.grname },
     }).on("select2-selecting", function(e) {
         // e.choice.id is automatically used as selection value - just set the type of the selection
         $typeElement.val(e.choice.type);
     });
+}
 var MentionsAutoComplete = function ($inputElement) {
   $inputElement.atwho({
     at: "@",
     callbacks: {
       remoteFilter: function(query, callback) {
         $.getJSON(
           pyroutes.url('users_and_groups_data'),
+          {
             query: query,
             types: 'users'
           },
           function(data) {
             callback(data.results)
+          }
         );
       },
       sorter: function(query, items, searchKey) {
@@ @@ -1228,89 +1226,88 @@ var addReviewMember = function(id,fname, @@
     var displayname = nname;
     if ((fname != "") && (lname != "")) {
         displayname = "{0} {1} ({2})".format(fname, lname, nname);
+    }
     var gravatarelm = gravatar(gravatar_link, gravatar_size, "");
     // WARNING: the HTML below is duplicate with
     // kallithea/templates/pullrequests/pullrequest_show.html
     // If you change something here it should be reflected in the template too.
     var element = (
         '     <li id="reviewer_{2}">\n'+
         '       <span class="reviewers_member">\n'+
         '         <input type="hidden" value="{2}" name="review_members" />\n'+
         '         <span class="reviewer_status" data-toggle="tooltip" title="not_reviewed">\n'+
         '             <i class="icon-circle changeset-status-not_reviewed"></i>\n'+
         '         </span>\n'+
         (gravatarelm ?
         '         {0}\n' :
         '')+
         '         <span>{1}</span>\n'+
         '         <a href="#" class="reviewer_member_remove" onclick="removeReviewMember({2})">\n'+
         '             <i class="icon-minus-circled"></i>\n'+
         '         </a> (add not saved)\n'+
         '       </span>\n'+
         '     </li>\n'
         ).format(gravatarelm, displayname, id);
+        ).format(gravatarelm, displayname.html_escape(), id);
     // check if we don't have this ID already in
     var ids = [];
     $('#review_members').find('li').each(function() {
             ids.push(this.id);
         });
     if(ids.indexOf('reviewer_'+id) == -1){
         //only add if it's not there
         $('#review_members').append(element);
+    }
+}
 var removeReviewMember = function(reviewer_id, repo_name, pull_request_id){
     var $li = $('#reviewer_{0}'.format(reviewer_id));
     $li.find('div div').css("text-decoration", "line-through");
     $li.find('input').prop('name', 'review_members_removed');
     $li.find('.reviewer_member_remove').replaceWith('&nbsp;(remove not saved)');
+}
 /* activate auto completion of users as PR reviewers */
 var PullRequestAutoComplete = function ($inputElement) {
     $inputElement.select2(
+    {
         placeholder: $inputElement.attr('placeholder'),
         minimumInputLength: 1,
         ajax: {
             url: pyroutes.url('users_and_groups_data'),
             dataType: 'json',
             data: function(term, page){
               return {
                 query: term
               };
             },
             results: function (data, page){
               return data;
             },
             cache: true
         },
         formatSelection: autocompleteFormatter,
         formatResult: autocompleteFormatter,
         escapeMarkup: function(m) { return m; },
     }).on("select2-selecting", function(e) {
         addReviewMember(e.choice.id, e.choice.fname, e.choice.lname, e.choice.nname,
                         e.choice.gravatar_lnk, e.choice.gravatar_size);
         $inputElement.select2("close");
         e.preventDefault();
     });
+}
 function addPermAction(perm_type) {
     var template =
         '<td><input type="radio" value="{1}.none" name="perm_new_member_{0}" id="perm_new_member_{0}"></td>' +
         '<td><input type="radio" value="{1}.read" checked="checked" name="perm_new_member_{0}" id="perm_new_member_{0}"></td>' +
         '<td><input type="radio" value="{1}.write" name="perm_new_member_{0}" id="perm_new_member_{0}"></td>' +
         '<td><input type="radio" value="{1}.admin" name="perm_new_member_{0}" id="perm_new_member_{0}"></td>' +
         '<td>' +
                 '<input class="form-control" id="perm_new_member_name_{0}" name="perm_new_member_name_{0}" value="" type="text" placeholder="{2}">' +
                 '<input id="perm_new_member_type_{0}" name="perm_new_member_type_{0}" value="" type="hidden">' +
         '</td>' +
         '<td></td>';
     var $last_node = $('.last_new_member').last(); // empty tr between last and add
     var next_id = $('.new_members').length;
     $last_node.before($('<tr class="new_members">').append(template.format(next_id, perm_type, _TM['Type name of user or member to grant permission'])));
     MembersAutoComplete($("#perm_new_member_name_"+next_id), $("#perm_new_member_type_"+next_id));

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