Port and service scanning on localhost due to improper URL validation.
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原文摘录
摘自原文（2742 字符中的一小部分）
Summary: Generally web masters and developers protect user-accessible CURL from requesting forbidden domains so that the attacker is not able to access internal resources. It is usually done using regular expressions. Mostly addresses like 127.x.x.x, 192.168.x.x and "integer" notation of IP …
原文中的代码
$ ./src/curl -V curl 7.69.0-DEV (x86_64-pc-linux-gnu) libcurl/7.69.0-DEV OpenSSL/1.1.1d $ ./src/curl -v "*" * Trying ::1:80... * TCP_NODELAY set * connect to ::1 port 80 failed: Connection refused * Trying 127.0.0.1:80... * TCP_NODELAY set * connect to 127.0.0.1 port 80 failed: Connection …
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阅读 HackerOne 原文 ↗作者 @vshmuk · 版权归作者与 curl 所有