Qihang Media Web Digital Signage 3.0.9 QH.aspx data path traversal

Summaryinfo

A vulnerability identified as critical has been detected in Qihang Media Web Digital Signage 3.0.9. Impacted is an unknown function of the file QH.aspx. The manipulation of the argument data leads to path traversal. This vulnerability is listed as CVE-2020-36898. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in Qihang Media Web Digital Signage 3.0.9 and classified as critical. This issue affects some unknown functionality of the file QH.aspx. The manipulation of the argument data with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity, and availability. The summary by CVE is:

QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated file deletion vulnerability in the QH.aspx endpoint that allows remote attackers to delete files without authentication. Attackers can exploit the 'data' parameter by sending a POST request with file paths to delete arbitrary files with web server permissions using directory traversal sequences.

The weakness was presented by Gjoko Krstic as 48749. The advisory is shared at exploit-db.com. The identification of this vulnerability is CVE-2020-36898 since 12/09/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:QH.aspx it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (48749). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Qihang

Name

• Media Web Digital Signage

Version

• 3.0.9

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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