Tag: security

Quizzes (70) Questions (1339)

Questions Related to security

Multiple choice technology security

Are there any memory issues in the following code? Please assume that variable inputsize has the correct size. int add_num_array(int inputsize, int num) { int newnum = malloc (inputsize * sizeof(int)); / 1 */ int i; for (i=0; i

  1. No vulnerabilities are present

  2. Line 1 should only use malloc(inputsize)

  3. Line 2 should be for (i=0; i<=n, i++)

  4. Line 1 should use calloc() instead of malloc()
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation
Multiple choice technology security

What can go wrong in following code? #include int main(int argc, char *argv[]) { if(argc != 3) { printf("usage: %s [source] [dest]\n", argv[0]); exit(1); } char x; FILE *file[2]; file[0] = fopen(argv[1],"r+"); file[1] = fopen(argv[2],"w+"); for(x = 0; x < 2; x++) { if(file[x] == NULL) { printf("error opening file.\n"); exit(1); } } do { x = fgetc(file[0]); fputc(x,file[1]); } while(x != EOF); for(x = 0; x < 2; x++) fclose(file[x]); return 0; }

  1. SQL Injection

  2. Arc Injection

  3. Buffer Overflow

  4. both 2 and 3
Reveal answer Fill a bubble to check yourself
C Correct answer