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why convertFromNestedBase64() check only strings longer than 50 characters? #62

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geralt opened this issue Jul 7, 2016 · 0 comments
Open

why convertFromNestedBase64() check only strings longer than 50 characters? #62

geralt opened this issue Jul 7, 2016 · 0 comments

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@geralt
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geralt commented Jul 7, 2016

If you use an exploit vector that it's base64_encode version is less than 50 characters, you can bypass this function.Try with these two string: first of them is detected and the second one not.

dGhpcyBpcyBhIGRhbmdlcm91cyBzdHJpbmcsIGJlIGNhcmVmdWxs
c3RyaW5nIG5vdCBkZXRlY3RlZCBieSBleHBvc2V=

Is there any reason that I can't see for limit at 50 characters?
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@geralt