Title: QiHang Media Web (QH.aspx) Digital Signage 3.0.9 (pre-auth) Remote Code Execution
Advisory ID: ZSL-2020-5582
Type: Local/Remote
Impact: System Access, DoS
Risk: (5/5)
Release Date: 13.08.2020

Summary

Digital Signage Software.

Description

The application suffers from an unauthenticated remote code execution. The vulnerability is caused due to lack of verification when uploading files with QH.aspx that can be written in any location by utilizing the 'remotePath' parameter to traverse through directories. Abusing the upload action and the 'fileToUpload' parameter, an unauthenticated attacker can exploit this to execute system commands by uploading a malicious ASPX script.

Vendor

Shenzhen Xingmeng Qihang Media Co., Ltd. | Guangzhou Hefeng Automation Technology Co., Ltd. - http://www.howfor.com

Affected Version

3.0.9.0

Tested On

Microsoft Windows Server 2012 R2 Datacenter
Microsoft Windows Server 2003 Enterprise Edition
ASP.NET 4.0.30319
HowFor Web Server/5.6.0.0
Microsoft ASP.NET Web QiHang IIS Server

Vendor Status

[27.07.2020] Vulnerability discovered.
[28.07.2020] Vendor contacted.
[31.07.2020] No response from the vendor.
[10.08.2020] Vendor contacted.
[12.08.2020] No response from the vendor.
[13.08.2020] Public security advisory released.

PoC

qhsignage_rce.html

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] https://packetstormsecurity.com/files/158862/QiHang-Media-Web-Digital-Signage-3.0.9-Remote-Code-Execution.html
[2] https://cxsecurity.com/issue/WLB-2020080060
[3] https://exchange.xforce.ibmcloud.com/vulnerabilities/186771
[4] https://www.exploit-db.com/exploits/48751

Changelog

[13.08.2020] - Initial release
[14.08.2020] - Added reference [1] and [2]
[16.08.2020] - Added reference [3]
[18.08.2020] - Added reference [4]

Contact

Zero Science Lab

Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk