lolaa2020
Answered

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whats the flow in this code, and whats the risk that its creating and what can i do to fix it? (c language)
#include
#include
int main (int argc, char ** argv)
{
char buffer[500];
strcpy(buffer, argv[1]);
return 0;
}

Sagot :

tonb

Answer:

The risk is a buffer overflow.

Explanation:

Whatever the user passes as a command line argument, will be copied into the buffer. If the user passes more than 499 characters, the end of the buffer will be overwritten.

To solve it, compare the string length of argv[1] to 500 before copying, or even better, start using the new strcpy_s( ) function.

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