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
Are you content with our current attacks on Con...
Search
GMO Flatt Security
August 05, 2024
2
420
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
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
510
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
7
2.7k
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
セキュリティ診断AIエージェント「Takumi」の雇用によって実現する開発生産性の向上
flatt_security
0
400
AIエージェントの「作業場」としてのサンドボックス技術
flatt_security
1
88
セキュリティ診断AIエージェント Takumi がもたらす変化 - 著名OSS 向け0-dayリサーチを例に
flatt_security
0
110
「攻め」と「守り」で理解する PHP アプリケーション
flatt_security
1
410
セキュリティ視点からみる生成AIアプリケーションとMCP ~ 脅威とリスク、認可・権限 ~
flatt_security
5
4.3k
脅威をモデリングしてMCPのセキュリティ対策を考えよう
flatt_security
7
3.7k
Featured
See All Featured
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
16
1.7k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
55
3.1k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
508
140k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
12
1.3k
Statistics for Hackers
jakevdp
799
220k
Stop Working from a Prison Cell
hatefulcrawdad
272
21k
GraphQLとの向き合い方2022年版
quramy
49
14k
The Invisible Side of Design
smashingmag
302
51k
Bash Introduction
62gerente
615
210k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
116
20k
We Have a Design System, Now What?
morganepeng
54
7.9k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
666
130k
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