Why does C-stack smashing detect Stack Overflow?
When I disabled the stack smashing protector no errors were detected, which should have happened when I used “./a.out wepassssssssssssssssss” So to answer your question above, the message “** stack smashing detected : xxx” was displayed because your stack smashing protector was active and found that there is stack overflow in your program.
What is stack smashing and what does it mean?
Stack smashing is a fancy term used for stack buffer overflows. It refers to attacks that exploit bugs in code enabling buffer overflows.
Why do I get stack smashing message after execution?
After execution the program runs for some time then exits with the message: What could be the possible reasons for this and how do I rectify it? Stack Smashing here is actually caused due to a protection mechanism used by gcc to detect buffer overflow errors. For example in the following snippet:
How to effectively bypass GCC stack smashing detection?
You can try typing shell commands, such as cat flag, or touch /tmp/pwned or whatever you like. Whew! That was long. Hope this info will help other confused souls as it did help me a while ago. You don’t need to bypass gcc’s stack smashing detection.
When do I get stack smashing terminated aborted error?
*** stack smashing detected ***: terminated Aborted (core dumped) Error only occurring sometimes? I am completing a homework assignment (I can’t post the code because of this), and I get this runtime error very infrequently: When I run the executable again after, and everything works fine.
Why is stack smashing detected in runtime library?
Because the buffer can only contain 16 characters, the remaining characters will be written past its end. This is stack smashing, and undefined behavior. A number of implementations of either the runtime library or your OS may detect this situation in some conditions and terminate the program. Either you are doing something wrong or the library is.
Is there a way to disable stack protection?
However, disabling stack-protection will remove this error but you might get segmentation fault as a result of overwriting stack.