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Are you content with our current attacks on Con...

Flatt Security
August 05, 2024
210

Are you content with our current attacks on Content-Type?

A presentation for BSides Las Vegas 2024.

Flatt Security

August 05, 2024
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  1. #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
  2. ◦ "NB[PO4 ◦ IUUQTBXTBNB[PODPNKQT ◦ #MBDL'BODPOUFOUUZQFSFTFBSDI ◦ IUUQTHJUIVCDPN#MBDL'BODPOUFOUUZQFSFTFBSDICMPC NBTUFS944NE ◦

    $BSSJFSXBWF ◦ IUUQTHJUIVCDPNDBSSJFSXBWFVQMPBEFSDBSSJFSXBWF ◦ $7& ◦ IUUQTHJUIVCDPNDBSSJFSXBWFVQMPBEFSDBSSJFSXBWF TFDVSJUZBEWJTPSJFT()4"HYIYHGRIK 3FGFSFODF