PHP Type Juggling Vulnerabilities, Netsparker - Paul's Security Weekly #572

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Sven Morgenroth is a security researcher at Netsparker. He found filter bypasses for Chrome's XSS auditor and several web application firewalls. He comes on the show to discuss PHP Type Juggling Vulnerabilities.


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Thank you very much, definitely more detailed than the OSWE content I have! :)

tekken-pakistan
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It is very disturbing that the presenters are constantly interrupting Sven's presentation.

kamilonurozkaleli
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[]+[] = ''
[]+{} = Object
{}+[] = 0
!+[] = true
'2' = 2


in MySQL all versions < 8.0 .
0 = 'anystring', also UTF-8 in MySQL < 8.0 only supports 3 bytes, so it cannot store mb characters with 4 bytes. In MySQL utf-8mb4 is what everything else calls utf-8

this behavior is typical of many weakly typed languages, the MySQL issue is particularly useful for authentication bypasses :D

corymarsh
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@13:10 wtf is this explanation? horrible

EDIT:
@17:25 "Let assume that we have a message like this" --- 'Like this' what? what the fuck is `s:14:"ping 127.0.0.1";`?

thedawnofslayer