On Tue, Apr 12, 2022 at 02:45:15PM -0400, Sergio Fuentes wrote:
> Please, run the following 3 commands to reproduce the bug:
>
> echo '. ./poc.sh' > poc.sh
> chmod +x poc.sh
> bash -c './poc.sh'
You're performing an infinite recursion. Eventually, you'll overflow
the stack, and bash will crash.
On Tue, Apr 12, 2022, 3:18 PM Sergio Fuentes <
fuentes.sergio.nov2...@gmail.com> 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'
>
> The backtrace from gdb:
> gdb /bin/bash core
> ...
> Program ter
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
Hello,
Please, run the following 3 commands to reproduce the bug:
echo '. ./poc.sh' > poc.sh
chmod +x poc.sh
bash -c './poc.sh'
The backtrace from gdb:
gdb /bin/bash core
...
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x5612fcdece65 in yyparse ()
(gdb) bt
#0 0x5612f
