CVE-2023-54400
CriticalCVSS 9.8Summary
Fumasoft Fumeng Cloud contains a SQL injection vulnerability in the AjaxMethod.ashx endpoint that allows unauthenticated remote attackers to inject arbitrary SQL through the Name parameter of the getEmpByname action without any authentication. Attackers can exploit UNION-based SQL injection techniques against the Microsoft SQL Server backend to extract, disclose, and modify database contents, with potential for further compromise of the underlying server. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18.
Risk Assessment
An unauthenticated attacker can read and modify data in the Microsoft SQL Server database and potentially compromise the database server. The vulnerability is actively exploited in the wild, increasing the urgency of response.
Recommendation
Immediately block internet access to the AjaxMethod.ashx endpoint and enforce authentication and parameter validation. Contact the vendor for a patch and review logs for exploitation attempts since 2023-10-18.
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Original NVD description (English source)
Fumasoft Fumeng Cloud contains a SQL injection vulnerability in the AjaxMethod.ashx endpoint that allows unauthenticated remote attackers to inject arbitrary SQL through the Name parameter of the getEmpByname action without any authentication. Attackers can exploit UNION-based SQL injection techniques against the Microsoft SQL Server backend to extract, disclose, and modify database contents, with potential for further compromise of the underlying server. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS