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Re: BASH recursion segfault, FUNCNEST doesn't help
From: |
Martin Schulte |
Subject: |
Re: BASH recursion segfault, FUNCNEST doesn't help |
Date: |
Thu, 2 Jun 2022 01:16:33 +0200 |
Hi Gergely!
> I stumbled upon a recursion overflow crash in BASH.
There are many ways to exhaust memory (and other) recources, recursion is one
them. In your case a variable like SRCNEST (and all the code with its
performance impacts needed behind it) might help, but what exactly is the
advantage of a "maximum source nesting level exceeded" error over a
segmentation fault?
Next we will need MAXARRUSAGE, MAXBRACEEXPAN, ...
> There's a slim chance this might be exploitable.
I would really be interested in an example.
Best regards,
Martin
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- Re: BASH recursion segfault, FUNCNEST doesn't help, Chet Ramey, 2022/06/07
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- Re: BASH recursion segfault, FUNCNEST doesn't help, Chet Ramey, 2022/06/09
Re: BASH recursion segfault, FUNCNEST doesn't help, Chet Ramey, 2022/06/06