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Buffer Overflow
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From: |
Sergio Fuentes |
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Subject: |
Buffer Overflow |
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Date: |
Tue, 12 Apr 2022 14:45:15 -0400 |
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 0x00005612fcdece65 in yyparse ()
(gdb) bt
#0 0x00005612fcdece65 in yyparse ()
#1 0x00005612fcde3869 in parse_command ()
#2 0x00005612fce511fc in parse_and_execute ()
#3 0x00005612fce50837 in ?? ()
Best regards and thanks,
fs
- Buffer Overflow,
Sergio Fuentes <=