Exploiting integer overflows

[Joxean Koret <joxeankoret () yahoo es>]

Hello,

I found various integer overflows that can be triggered from remote in a
product but all of these appears to be unexploitables by common ways.

The product is a closed source one so I do not have the source code to
audit it.

Any tip about when an integer overflow can be determined as non
exploitable?

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Thanks in advance,
Joxean Koret

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