Consider the following code snippet in C: char *base_url = malloc(11 * sizeof(char)); printf("Enter an 11 character URL: "); scanf("%s", base_url); char src[11]; char dst[11]; // copies base_url to src strncpy(src, base_url, 11); // copies src to dest strcpy(dst, src); printf("src: %s dst: %s\n", src, dst); Identify at least one potential buffer overflow vulnerability and explain why/how it can be exploited (i.e., not just that it’s a buffer overflow, but where the problem will manifest itself).
Consider the following code snippet in C: char *base_url = malloc(11 * sizeof(char)); printf("Enter an 11 character URL: "); scanf("%s", base_url); char src[11]; char dst[11]; // copies base_url to src strncpy(src, base_url, 11); // copies src to dest strcpy(dst, src); printf("src: %s dst: %s\n", src, dst); Identify at least one potential buffer overflow vulnerability and explain why/how it can be exploited (i.e., not just that it’s a buffer overflow, but where the problem will manifest itself).
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider the following code snippet in C:
char *base_url = malloc(11 * sizeof(char));
printf("Enter an 11 character URL: ");
scanf("%s", base_url);
char src[11];
char dst[11];
// copies base_url to src
strncpy(src, base_url, 11);
// copies src to dest
strcpy(dst, src);
printf("src: %s dst: %s\n", src, dst);
- Identify at least one potential buffer overflow vulnerability and explain why/how it can be exploited (i.e., not just that it’s a buffer overflow, but where the problem will manifest itself).
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