Thread by @BruteBee

Why would such string crash Whatsapp on Android devices?

Rendering issues?

Submitted URL:
http[://wa.me/settings

Effective URL:
https[://api.whatsapp.com/resolve/?deeplink=%2Fsettings&not_found=1

#infosec #whatsappcrash

That's why!

IndexOutOfBoundsException

This exception occurs when you try to access an index that is outside the bounds of an array or a collection.

Let's roll it!

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Error line is:

java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0 at jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)

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This suggests that we are trying to access an element at index 0 in a collection or array that has a length of 0, meaning it is empty. It could be related to the code snippet mentioned as X.001.AOM(:545).

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@akaclandestine

It also affects Whatsapp Business
Version 2.23.10.77

@felipepayao

PoC

I can confirm some Xiaomi and Samsung devices are affected, running Android 12 at this point.
You must enter whatsapp Web and delete that chat to make the bug go away for now or delete entire conversation.

Android Version 12 is affected!

I mean, delete that message.

@UnrollHelper