Is document.write taking a string containing encodeURIComponent(document.URL) vulnerable to xss
Is the following susceptible to a XSS attack, especially in older browsers:
<script type='text/javascript'>
document.write('<script src="' + 'someurl.com' + '&url=' + encodeURIComponent(document.URL) +'" type="text/javascript">' + '</script>');
</script>
I have read that when calling encodeURIComponent certain browsers don't entirely encode every character, take for example firefoxes implementation:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
var set2 = "-_.!~*'()"; // Unescaped Characters
console.log(encodeURI(set2)); // -_.!~*'()
Is it possible to exploit this snippet of code especially with older browsers? especially considering this might be on every page.
javascript security xss
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
add a comment |
Is the following susceptible to a XSS attack, especially in older browsers:
<script type='text/javascript'>
document.write('<script src="' + 'someurl.com' + '&url=' + encodeURIComponent(document.URL) +'" type="text/javascript">' + '</script>');
</script>
I have read that when calling encodeURIComponent certain browsers don't entirely encode every character, take for example firefoxes implementation:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
var set2 = "-_.!~*'()"; // Unescaped Characters
console.log(encodeURI(set2)); // -_.!~*'()
Is it possible to exploit this snippet of code especially with older browsers? especially considering this might be on every page.
javascript security xss
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
add a comment |
Is the following susceptible to a XSS attack, especially in older browsers:
<script type='text/javascript'>
document.write('<script src="' + 'someurl.com' + '&url=' + encodeURIComponent(document.URL) +'" type="text/javascript">' + '</script>');
</script>
I have read that when calling encodeURIComponent certain browsers don't entirely encode every character, take for example firefoxes implementation:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
var set2 = "-_.!~*'()"; // Unescaped Characters
console.log(encodeURI(set2)); // -_.!~*'()
Is it possible to exploit this snippet of code especially with older browsers? especially considering this might be on every page.
javascript security xss
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
Is the following susceptible to a XSS attack, especially in older browsers:
<script type='text/javascript'>
document.write('<script src="' + 'someurl.com' + '&url=' + encodeURIComponent(document.URL) +'" type="text/javascript">' + '</script>');
</script>
I have read that when calling encodeURIComponent certain browsers don't entirely encode every character, take for example firefoxes implementation:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
var set2 = "-_.!~*'()"; // Unescaped Characters
console.log(encodeURI(set2)); // -_.!~*'()
Is it possible to exploit this snippet of code especially with older browsers? especially considering this might be on every page.
javascript security xss
javascript security xss
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
asked Nov 13 '18 at 14:17
FishFingersFishFingers
619
619
add a comment |
add a comment |
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