Overview
The cybersecurity landscape has been hit with yet another critical vulnerability, this time affecting the UTT HiPER 840G up to version 3.1.1-190328. This vulnerability, designated as CVE-2025-7118, exposes systems to potential compromise and data leakage. The vulnerability manipulates the file /goform/formPictureUrl and causes a buffer overflow – a common and serious security issue, where an application writes more data to a buffer than it can hold, potentially corrupting or overwriting other data. This vulnerability is especially alarming due to its critical severity and the fact that the exploit has been disclosed to the public, increasing the likelihood of its potential misuse.
Vulnerability Summary
CVE ID: CVE-2025-7118
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
UTT HiPER 840G | up to 3.1.1-190328
How the Exploit Works
The vulnerability lies in the handling of the file /goform/formPictureUrl in the UTT HiPER 840G. The application fails to properly validate the input for the argument ‘importpictureurl’. By manipulating this argument, an attacker can cause a buffer overflow. This allows the attacker to overwrite memory beyond the buffer boundaries, potentially causing a system crash or, worse, allowing the execution of arbitrary code.
Conceptual Example Code
The following is a conceptual example of how the vulnerability might be exploited. This example uses an HTTP POST request with a likely malicious payload to the ‘/goform/formPictureUrl’ endpoint.
POST /goform/formPictureUrl HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "importpictureurl": "A"*10000 } // Buffer overflow triggered by oversized stringIn this example, the oversized string “A”*10000 triggers the buffer overflow. This is a conceptual example and the actual exploit might involve more complex payloads.
Recommended Mitigation
The best course of action is to apply the vendor patch as soon as it becomes available. However, as the vendor has not yet responded to the vulnerability disclosure, users are advised to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. These tools can be configured to detect and block attempts to exploit this vulnerability.