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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@@ @@ -1053,336 +1053,333 @@ var autocompleteHighlightMatch = functio @@
     if (matchindex <0)
         return full.html_escape();
     return full.substring(0, matchindex).html_escape()
         + '<span class="select2-match">'
         + full.substr(matchindex, snippet.length).html_escape()
         + '</span>'
         + full.substring(matchindex + snippet.length).html_escape();
 };
 // Return html snippet for showing the provided gravatar url
 var gravatar = function(gravatar_lnk, size, cssclass) {
     if (!gravatar_lnk) {
         return '';
+    }
     if (gravatar_lnk == 'default') {
         return '<i class="icon-user {1}" style="font-size: {0}px;"></i>'.format(size, cssclass);
+    }
     return ('<i class="icon-gravatar {2}"' +
             ' style="font-size: {0}px;background-image: url(\'{1}\'); background-size: {0}px"' +
             '></i>').format(size, gravatar_lnk, cssclass);
+}
 var autocompleteGravatar = function(res, gravatar_lnk, size, group) {
     var elem;
     if (group !== undefined) {
         elem = '<i class="perm-gravatar-ac icon-users"></i>';
     } else {
         elem = gravatar(gravatar_lnk, size, "perm-gravatar-ac");
+    }
     return '<div class="ac-container-wrap">{0}{1}</div>'.format(elem, res);
+}
 // Custom formatter to highlight the matching letters and do HTML escaping
 var autocompleteFormatter = function (oResultData, sQuery, sResultMatch) {
     var query;
     if (sQuery && sQuery.toLowerCase) // YAHOO AutoComplete
         query = sQuery.toLowerCase();
     else if (sResultMatch && sResultMatch.term) // select2 - parameter names doesn't match
         query = sResultMatch.term.toLowerCase();
     // group
     if (oResultData.type == "group") {
         return autocompleteGravatar(
             "{0}: {1}".format(
                 _TM['Group'],
                 autocompleteHighlightMatch(oResultData.grname, query)),
             null, null, true);
+    }
     // users
     if (oResultData.nname) {
         var displayname = autocompleteHighlightMatch(oResultData.nname, query);
         if (oResultData.fname && oResultData.lname) {
             displayname = "{0} {1} ({2})".format(
                 autocompleteHighlightMatch(oResultData.fname, query),
                 autocompleteHighlightMatch(oResultData.lname, query),
                 displayname);
+        }
         return autocompleteGravatar(displayname, oResultData.gravatar_lnk, oResultData.gravatar_size);
+    }
     return '';
 };
 var SimpleUserAutoComplete = function ($inputElement) {
     $inputElement.select2({
         formatInputTooShort: $inputElement.attr('placeholder'),
         initSelection : function (element, callback) {
             $.ajax({
                 url: pyroutes.url('users_and_groups_data'),
                 dataType: 'json',
                 data: {
                     key: element.val()
                 },
                 success: function(data){
                   callback(data.results[0]);
+                }
             });
         },
         minimumInputLength: 1,
         ajax: {
             url: pyroutes.url('users_and_groups_data'),
             dataType: 'json',
             data: function(term, page){
               return {
                 query: term
               };
             },
             results: function (data, page){
               return data;
             },
             cache: true
         },
         formatSelection: autocompleteFormatter,
         formatResult: autocompleteFormatter,
         escapeMarkup: function(m) { return m; },
         id: function(item) { return item.nname; },
     });
+}
 var MembersAutoComplete = function ($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) {
         $.getJSON(
           pyroutes.url('users_and_groups_data'),
+          {
             query: query,
             types: 'users'
           },
           function(data) {
             callback(data.results)
+          }
         );
       },
       sorter: function(query, items, searchKey) {
         return items;
+      }
     },
     displayTpl: "<li>" + autocompleteGravatar('${fname} ${lname} (${nname})', '${gravatar_lnk}', 16) + "</li>",
     insertTpl: "${atwho-at}${nname}"
   });
 };
 // Set caret at the given position in the input element
 function _setCaretPosition($inputElement, caretPos) {
     $inputElement.each(function(){
         if(this.createTextRange) { // IE
             var range = this.createTextRange();
             range.move('character', caretPos);
             range.select();
+        }
         else if(this.selectionStart) { // other recent browsers
             this.focus();
             this.setSelectionRange(caretPos, caretPos);
+        }
         else // last resort - very old browser
             this.focus();
     });
+}
 var addReviewMember = function(id,fname,lname,nname,gravatar_link,gravatar_size){
     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));
+}
 function ajaxActionRevokePermission(url, obj_id, obj_type, field_id, extra_data) {
     var success = function (o) {
             $('#' + field_id).remove();
         };
     var failure = function (o) {
             alert(_TM['Failed to revoke permission'] + ": " + o.status);
         };
     var query_params = {};
     // put extra data into POST
     if (extra_data !== undefined && (typeof extra_data === 'object')){
         for(var k in extra_data){
             query_params[k] = extra_data[k];
+        }
+    }
     if (obj_type=='user'){
         query_params['user_id'] = obj_id;
         query_params['obj_type'] = 'user';
+    }
     else if (obj_type=='user_group'){
         query_params['user_group_id'] = obj_id;
         query_params['obj_type'] = 'user_group';
+    }
     ajaxPOST(url, query_params, success, failure);
 };
 /* Multi selectors */
 var MultiSelectWidget = function(selected_id, available_id, form_id){
     var $availableselect = $('#' + available_id);
     var $selectedselect = $('#' + selected_id);
     //fill available only with those not in selected
     var $selectedoptions = $selectedselect.children('option');
     $availableselect.children('option').filter(function(i, e){
             for(var j = 0, node; node = $selectedoptions[j]; j++){
                 if(node.value == e.value){
                     return true;
+                }
+            }
             return false;
         }).remove();
     $('#add_element').click(function(e){
             $selectedselect.append($availableselect.children('option:selected'));
         });
     $('#remove_element').click(function(e){
             $availableselect.append($selectedselect.children('option:selected'));
         });
     $('#'+form_id).submit(function(){
             $selectedselect.children('option').each(function(i, e){
                 e.selected = 'selected';
             });
         });
+}
 /**
  Branch Sorting callback for select2, modifying the filtered result so prefix
  matches come before matches in the line.
  **/
 var branchSort = function(results, container, query) {
     if (query.term) {
         return results.sort(function (a, b) {
             // Put closed branches after open ones (a bit of a hack ...)
             var aClosed = a.text.indexOf("(closed)") > -1,
                 bClosed = b.text.indexOf("(closed)") > -1;
             if (aClosed && !bClosed) {

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