eCharge Hardy Barth cPH2 ntp check_req.php command injection

Summaryinfo

A vulnerability labeled as critical has been found in eCharge Hardy Barth cPH2. Affected by this vulnerability is an unknown functionality of the file check_req.php of the component ntp Handler. Executing a manipulation can lead to command injection. The identification of this vulnerability is CVE-2025-3881. The attack needs to be done within the local network. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in eCharge Hardy Barth cPH2 (the affected version unknown). This vulnerability affects an unknown part of the file check_req.php of the component ntp Handler. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

eCharge Hardy Barth cPH2 check_req.php ntp Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of eCharge Hardy Barth cPH2 charging stations. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the ntp parameter provided to the check_req.php endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the www-data user. Was ZDI-CAN-23113.

The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2025-3881 since 04/22/2025. The exploitation appears to be easy. The attack needs to be done within the local network. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/24/2025). The MITRE ATT&CK project declares the attack technique as T1202.

By approaching the search of inurl:check_req.php 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 EUVD (EUVD-2025-16097). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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• eCharge Hardy Barth

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• cPH2

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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