Buffer Overflow

Example 1: C

Vulnerable Code:

cCopy codechar buffer[10];
strcpy(buffer, "This string is too long");

Reason for vulnerability: Copying a string that exceeds the buffer size, leading to buffer overflow.

Fixed Code:

cCopy codechar buffer[10];
strncpy(buffer, "This string", sizeof(buffer) - 1);
buffer[sizeof(buffer) - 1] = '\0';

Reason for fix: Use strncpy and ensure the buffer is null-terminated.