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prevent xss attack in Select2 select menu

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This commit is contained in:
Uwe Steinmann 2019-06-13 09:03:00 +02:00
parent b0e3c816ff
commit aed0c3cdf3
1 changed files with 10 additions and 4 deletions
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14
styles/bootstrap/application.js
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@ -1,10 +1,15 @@
/* Template function which outputs an option in a chzn-select */ /* Template function which outputs an option in a chzn-select
* The replace() call is required to prevent xss attacks (see CVE-2019-12745)
* Using htmlspecialchars() in php isn't sufficient because, chzn_template_func
* will receive an unescaped string
* (see https://forums.select2.org/t/propperly-escape-option-value-to-prevent-xss/788)
*/
chzn_template_func = function (state) { chzn_template_func = function (state) {
var subtitle = $(state.element).data('subtitle'); var subtitle = $(state.element).data('subtitle');
var warning = $(state.element).data('warning'); var warning = $(state.element).data('warning');
var html = '<span>'+state.text+''; var html = '<span>'+state.text.replace(/</g, '&lt;')+'';
if(subtitle) if(subtitle)
html += '<br /><i>'+subtitle+'</i>'; html += '<br /><i>'+subtitle.replace(/</g, '&lt;')+'</i>';
if(warning) if(warning)
html += '<br /><span class="label label-warning"><i class="icon-warning-sign"></i></span> '+warning+''; html += '<br /><span class="label label-warning"><i class="icon-warning-sign"></i></span> '+warning+'';
html += '</span>'; html += '</span>';
@ -38,7 +43,8 @@ $(document).ready( function() {
$(".chzn-select").select2({ $(".chzn-select").select2({
width: '100%', width: '100%',
templateResult: chzn_template_func templateResult: chzn_template_func,
templateSelection: chzn_template_func
}); });
/* change the color and length of the bar graph showing the password /* change the color and length of the bar graph showing the password