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
0.0.0.0 day
Search
circled9
August 23, 2024
Programming
0
130
0.0.0.0 day
Niigata 5min Tech #11で発表したスライドです。
circled9
August 23, 2024
Tweet
Share
More Decks by circled9
See All by circled9
キースイッチ入門
circled9
0
99
CloudflareのAI関連の機能さわってみた
circled9
0
830
小数の丸め誤差の話
circled9
0
150
数値の文字列をパースしよう
circled9
0
270
🔥 Hono v4 やってみた
circled9
1
220
JetBrains AI Assistant を試してみた
circled9
1
580
Fresh
circled9
0
270
React Hooks 勉強会 vol.3
circled9
2
460
JSON.stringify()
circled9
2
500
Other Decks in Programming
See All in Programming
PHP でエミュレータを自作して Ubuntu を動かそう
m3m0r7
PRO
2
150
我々はなぜ「層」を分けるのか〜「関心の分離」と「抽象化」で手に入れる変更に強いシンプルな設計〜 #phperkaigi / PHPerKaigi 2026
shogogg
2
600
ロボットのための工場に灯りは要らない
watany
12
3.2k
野球解説AI Agentを開発してみた - 2026/02/27 LayerX社内LT会資料
shinyorke
PRO
0
370
へんな働き方
yusukebe
6
2.8k
Claude Codeログ基盤の構築
giginet
PRO
7
3.7k
What Spring Developers Should Know About Jakarta EE
ivargrimstad
0
690
Mastering Event Sourcing: Your Parents Holidayed in Yugoslavia
super_marek
0
120
RailsのValidatesをSwift Macrosで再現してみた
hokuron
0
140
Cyrius ーLinux非依存にコンテナをネイティブ実行する専用OSー
n4mlz
0
250
ネイティブアプリとWebフロントエンドのAPI通信ラッパーにおける共通化の勘所
suguruooki
0
190
Codex の「自走力」を高める
yorifuji
0
1.3k
Featured
See All Featured
Noah Learner - AI + Me: how we built a GSC Bulk Export data pipeline
techseoconnect
PRO
0
150
The Power of CSS Pseudo Elements
geoffreycrofte
82
6.2k
Stop Working from a Prison Cell
hatefulcrawdad
274
21k
Navigating Weather and Climate Data
rabernat
0
150
How Fast Is Fast Enough? [PerfNow 2025]
tammyeverts
3
500
The AI Revolution Will Not Be Monopolized: How open-source beats economies of scale, even for LLMs
inesmontani
PRO
3
3.2k
Taking LLMs out of the black box: A practical guide to human-in-the-loop distillation
inesmontani
PRO
3
2.1k
Navigating Team Friction
lara
192
16k
Jess Joyce - The Pitfalls of Following Frameworks
techseoconnect
PRO
1
120
sira's awesome portfolio website redesign presentation
elsirapls
0
200
How to optimise 3,500 product descriptions for ecommerce in one day using ChatGPT
katarinadahlin
PRO
1
3.5k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
360
30k
Transcript
0.0.0.0 day Niigata 5min Tech #11 @circled9
ࣗݾհ @circled9 দҪ ਖ਼ࢤ (Matsui Masashi) גࣜձࣾϞχΫϧ IPΞυϨε127.0.0.1Ͱ͢
ࠓ͢͜ͱ • 0.0.0.0 dayͱ͍͏੬ऑੑͷհΛ͠·͢ • ৄ͘͜͠ͷهࣄΛࢀর͍ͯͩ͘͠͞ • https://www.oligo.security/blog/0-0-0-0-day- exploiting-localhost-apis-from-the-browser 3
֓ཁ • ֎෦ϖʔδ͔ΒϩʔΧϧʹ͚ͯϦΫΤετΛඈͤΔͱ͍͏ • ϩʔΧϧͰಈ͍͍ͯΔαʔϏε͕ૂΘΕΔ͜ͱ͕͋Δ • ֤ϒϥβͷରԠ͜Ε͔Βʢ8݄த०࣌ʣ 4
ͪΐͬͱੲͷ • ֎෦ϖʔδ͔ΒϩʔΧϧͷΞυϨεʹରͯ͠ϦΫΤετΛඈͤͨ • ͦΕΛར༻ͯ͠Ϛγϯ্Ͱಈ͍͍ͯΔαʔόʔͷϙʔτΛεΩϟϯ͠ ͯݸਓΛࣝผ͠Α͏ͱ͢Δ͍ํ͞Ε͍ͯͨ • ͍ΘΏΔϑΟϯΨʔϓϦϯςΟϯά • ͦΕҎ֎ʹϩʔΧϧωοτϫʔΫͷϧʔλʔʹରͯ͠߈ܸΛࢼΈΔ
έʔε͋ͬͨΓͨ͠ 5
CORS (Cross-Origin Resource Sharing) • CORSҟͳΔυϝΠϯʹର͢ΔϦιʔεͷΞΫηεͷ੍ޚΛ͢Δ • CORSʹΑΓ֎෦ϖʔδ͔ΒϩʔΧϧʹରͯ͠উखʹΞΫηε͠Α͏ ͱ͢Δͱ͔ΕΔΑ͏ʹͳͬͨ •
ϩʔΧϧΞΫηεʹΑΔϑΟϯΨʔϓϦϯςΟϯά͕͛ΔΑ͏ʹ ͳͬͨʂ 6
ϦΫΤετ͕࣮ߦ͞ΕΔ • CORSϨεϙϯεΛ੍ޚ͢Δ࡞Γʹͳ͍ͬͯΔ • ͦͷͨΊϦΫΤετͦͷͷ࣮ߦ͞ΕΔ • ϦΫΤετ͕࣮ߦ͞ΕΔ͚ͩͰཱ͢Δ߈ܸʹରͯ͠ແඋ 7
PNA (Private Network Access) • Chromeʹ࣮͞Ε͍ͯΔ༷ • ҆શੑͷ͍ίϯςΩετ͔Β҆શੑͷߴ͍ίϯςΩετʹ௨৴Ͱ ͖ͳ͍ͱ͍͏Έ •
CORSͱҧ͍ϦΫΤετͷ࣮ߦΛ੍ޚ͢Δ 8
https://developer.chrome.com/blog/private-network-access-update?hl=ja 9
͜ΕͰ҆৺ʂ
None
0.0.0.0͕ͳ͍
ࠓޙͷ༧ఆ • Chrome0.0.0.0ΛϒϩοΫ͢Δ༧ఆ • 128͔ΒϩʔϧΞτͯ͠133·Ͱʹྃ༧ఆ • Safari0.0.0.0ΛϒϩοΫ͢Δ༧ఆ • Webkitʹ0.0.0.0ΛϒϩοΫ͢Δมߋ͕ೖͬͨ •
FirefoxͷରԠະఆ • MDNͷ༷ͷํΛߋ৽ͨͬ͠Ά͍ͷͰϒϩοΫ͢Δͣ 13
Α͘Θ͔ͬͯͳ͍͜ͱ • 0.0.0.0ΛϒϩοΫ͢ΔΛ͍ͯ͠Δ͕ɺͦΕҎલʹSafariͱ FirefoxPNAΛ࣮ͯ͠ͳ͍ • 0.0.0.0ΛϒϩοΫ͢Δ͚ͩͰޮՌ͕ബ͍ͷͰʁ • ͋ͱɺखݩͰPNAͷϔομʔ͚ͭͯ௨৴ڐՄ͢Δ࣮Ͱ͖ͳ͔ͬͨɺ Θ͔ΒΜ 14
͓͠·͍