PHP 5.3.5 – ‘grapheme_extract()’ Null Pointer Dereference Denial of Service

  • 作者: Maksymilian Arciemowicz
    日期: 2011-02-17
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/35354/
  • source: https://www.securityfocus.com/bid/46429/info
    
    PHP is prone to a denial-of-service vulnerability caused by a NULL-pointer dereference.
    
    An attacker can exploit this issue to cause an appliation written in PHP to crash, denying service to legitimate users.
    
    PHP 5.3.5 is vulnerable; other versions may also be affected. 
    
    The following proof-of-concept is available:
    
    grapheme_extract('a',-1);