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Re: Buffer Overflow
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From: |
Chet Ramey |
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Subject: |
Re: Buffer Overflow |
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Date: |
Tue, 12 Apr 2022 16:31:59 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 |
On 4/12/22 2:45 PM, Sergio Fuentes wrote:
> Hello,
>
> Please, run the following 3 commands to reproduce the bug:
>
> echo '. ./poc.sh' > poc.sh
> chmod +x poc.sh
> bash -c './poc.sh'
You've created infinite recursion using `.' and run yourself out of stack
space. This isn't a bug.
You can set the SOURCENEST_MAX definition in config-top.h if you want a
bash that caps this recursion.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/