Lock in $30 Savings on PRO—Offer Ends Soon! ⏳
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Are you content with our current attacks on Con...
Search
GMO Flatt Security
August 05, 2024
2
430
Are you content with our current attacks on Content-Type?
A presentation for BSides Las Vegas 2024.
GMO Flatt Security
August 05, 2024
Tweet
Share
More Decks by GMO Flatt Security
See All by GMO Flatt Security
OSSをつくる人・つかう人と伴走するセキュリティ診断AIエージェント - その開発の歩み
flatt_security
1
24
セキュリティAIエージェントの現在と未来 / PSS #2 Takumi Session
flatt_security
3
1.6k
GMO Flatt Security 会社紹介資料
flatt_security
0
22k
ブラウザ拡張のセキュリティの話 / Browser Extension Security
flatt_security
0
270
AIエージェントSaaSを安全に提供する技術 / Architecture Conference 2025
flatt_security
3
6k
How We Built a Secure Sandbox Platform for AI Agents
flatt_security
2
280
Goに育てられ開発者向けセキュリティ事業を立ち上げた僕が今向き合う、AI × セキュリティの最前線 / Go Conference 2025
flatt_security
0
650
LLMアプリケーション開発におけるセキュリティリスクと対策 / LLM Application Security
flatt_security
8
3k
診断AIエージェントによるセキュリティの未来 – 著名OSS向け0-dayリサーチを例に
flatt_security
2
1.1k
Featured
See All Featured
Docker and Python
trallard
47
3.7k
Six Lessons from altMBA
skipperchong
29
4.1k
Optimizing for Happiness
mojombo
379
70k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
508
140k
Building a Modern Day E-commerce SEO Strategy
aleyda
45
8.3k
The Cost Of JavaScript in 2023
addyosmani
55
9.3k
Building Flexible Design Systems
yeseniaperezcruz
330
39k
Designing for Performance
lara
610
69k
GraphQLの誤解/rethinking-graphql
sonatard
73
11k
It's Worth the Effort
3n
187
29k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
34
2.5k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
52
5.8k
Transcript
"SFZPVDPOUFOUXJUIPVSDVSSFOU BUUBDLTPO$POUFOU5ZQF B[BSB !B@[BSB@O FJ !FJ 'MBUU4FDVSJUZJOD
6OFYQFDUFEQBUIGSPN)551SFTQPOTF VOFYQFDUFEBUUBDLQBUI
4FMGJOUSPEVDUJPOFJ &JKJ.PSJFJ 9!FJ 'MBUU4FDVSJUZJOD .VTDMF#SBJO
/PSJIJEF4BJUPB[BSB 9!B@[BSB@O 'MBUU4FDVSJUZJOD 4FMGJOUSPEVDUJPOB[BSB IUUQTNJTDB[BSBKQ3&"%.&
5PQJDT
8IBUJT$POUFOU5ZQF 0MEBUUBDLQBUIJO)551SFTQPOTF /FXBUUBDLQBUIJO)551SFTQPOTF #VH#PVOUZQSPHSBNSFTFBSDI 044SFTFBSDI .JUJHBUJPOT 5PQJDT
8IBUJT$POUFOU5ZQF
8IBUJT$POUFOU5ZQF
8IBUJT$POUFOU5ZQF
8IBUJT$POUFOU5ZQF
8IBUJT$POUFOU5ZQF
8IBUJT$POUFOU5ZQF
8IBUJT$POUFOU5ZQF
0MEBUUBDLQBUIJO)551SFTQPOTF
0MEBUUBDLQBUIJO)551SFTQPOTF
0MEBUUBDLQBUIJO)551SFTQPOTF
0MEBUUBDLQBUIJO)551SFTQPOTF
0MEBUUBDLQBUIJO)551SFTQPOTF
0MEBUUBDLQBUIJO)551SFTQPOTF &YUFOTJPO QOHKQH $POUFOU5ZQF JNBHFQOHJNBHFKQH .BHJDCZUF
0MEBUUBDLQBUIJO)551SFTQPOTF &YUFOTJPO QOHKQH $POUFOU5ZQF JNBHFQOHJNBHFKQH .BHJDCZUF
0MEBUUBDLQBUIJO)551SFTQPOTF
/FXBUUBDLQBUIJO)551SFTQPOTF
8IBUJT0CKFDU4UPSBHF %BUB .FUBEBUB
8IBUJT0CKFDU4UPSBHF %BUB .FUBEBUB $POUFOU5ZQF
/FXBUUBDLQBUIJO)551SFTQPOTF
/FXBUUBDLQBUIJO)551SFTQPOTF
/FXBUUBDLQBUIJO)551SFTQPOTF
/FXBUUBDLQBUIJO)551SFTQPOTF
/FXBUUBDLQBUIJO)551SFTQPOTF 'PSHPUWBMJEBUJPO
/FXBUUBDLQBUIJO)551SFTQPOTF
/FXBUUBDLQBUIJO)551SFTQPOTF
#VH#PVOUZQSPHSBNSFTFBSDI
%JTDPWFSZJO#VH#PVOUZQSPHSBN /PWBMJEBUJPO
%JTDPWFSZJO#VH#PVOUZQSPHSBN /PUVTJOH4
%JTDPWFSZJO#VH#PVOUZQSPHSBN "DDVSBUFWBMJEBUJPO
044SFTFBSDI
$PEFTFBSDI
$PEFTFBSDI
$PEFTFBSDI
$PEFTFBSDI /PWBMJEBUJPOPSMBYWBMJEBUJPO
$PEFTFBSDI /PWBMJEBUJPOPSMBYWBMJEBUJPO 😨
/PWBMJEBUJPO
/PWBMJEBUJPOJO)551SFRVFTU
/PWBMJEBUJPO /PWBMJEBUJPO
/PWBMJEBUJPO&YBNQMF
/PWBMJEBUJPO&YBNQMF 6TFEJSFDUWBMVFT
/PWBMJEBUJPO&YBNQMF
/PWBMJEBUJPO&YBNQMF 7BMJEBUJPO GSPOUFOEPOMZ
/PWBMJEBUJPO&YBNQMF 6QMPBE UFYUIUNM
/PWBMJEBUJPOJO)551SFTQPOTF
/PWBMJEBUJPO /PWBMJEBUJPO
/PWBMJEBUJPO74$PEF&YUFOTJPO
/PWBMJEBUJPO74$PEF&YUFOTJPO (FU UFYUIUNM
7BMJEBUJPOCZQBTT
7BMJEBUJPOCZQBTTJO)551SFRVFTU
7BMJEBUJPOCZQBTT -BYWBMJEBUJPO
7BMJEBUJPOCZQBTT -BYWBMJEBUJPO
#ZQBTTQBUUFSOT Code Implementations Bypass Examples startsWith(“image/png”) image/png, text/html endsWith(“image/png”)
text/html; image/png /^image\/png/ image/png, text/html includes(“image/png”) text/html; image/png
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7&
7BMJEBUJPOCZQBTT$7& #ZQBTT JNBHFQOH UFYUIUNM
7BMJEBUJPOCZQBTTJO)551SFTQPOTF
7BMJEBUJPOCZQBTT -BYWBMJEBUJPO
7BMJEBUJPOCZQBTT -BYWBMJEBUJPO
7BMJEBUJPOCZQBTT&MFDUSPO
7BMJEBUJPOCZQBTT&MFDUSPO #ZQBTT JNBHFQOH UFYUIUNM
7BMJEBUJPOCZQBTT$ISPNF&YUFOTJPO
7BMJEBUJPOCZQBTT$ISPNF&YUFOTJPO #ZQBTT UFYUIUNMQEG
.JUJHBUJPOT
4FDVSJUZNFBTVSFTJOJNQMFNFOUBUJPO z
4FDVSJUZNFBTVSFTJOJNQMFNFOUBUJPO z
5IBOLZPVWFSZNVDIGPSMJTUFOJOH
3FGFSFODFT
◦ "NB[PO4 ◦ IUUQTBXTBNB[PODPNKQT ◦ #MBDL'BODPOUFOUUZQFSFTFBSDI ◦ IUUQTHJUIVCDPN#MBDL'BODPOUFOUUZQFSFTFBSDICMPC NBTUFS944NE ◦
$BSSJFSXBWF ◦ IUUQTHJUIVCDPNDBSSJFSXBWFVQMPBEFSDBSSJFSXBWF ◦ $7& ◦ IUUQTHJUIVCDPNDBSSJFSXBWFVQMPBEFSDBSSJFSXBWF TFDVSJUZBEWJTPSJFT()4"HYIYHGRIK 3FGFSFODF
23DPEF IUUQTTQFBLFSEFDLDPNGMBUU@TFDVSJUZBSFZPVDPOUFOUXJUIPVSDVSSFOUBUUBDLTPODPOUFOUUZQF
#ZQBTTUFDIOJRVF IUUQTCTJEFTUPLZPFOYTTVTJOHEJSUZDPOUFOUUZQFJODMPVEFSB
'"2
9445ISFBUT 4UPSFE944
&TTFOUJBM5IJOHT /PWBMJEBUJPO