Overview
CVE-2025-12039 is a medium severity vulnerability affecting the BigBuy Dropshipping Connector for WooCommerce plugin for WordPress. This flaw allows unauthenticated attackers to perform IP address spoofing, potentially gaining unauthorized access to sensitive information, specifically the output of phpinfo(). The vulnerability exists in versions up to and including 2.0.5.
Technical Details
The vulnerability stems from insufficient IP address validation within the plugin’s API controller. The plugin relies heavily on user-supplied HTTP headers (such as X-Forwarded-For or Client-IP) to determine the client’s IP address. Without proper sanitization or validation of these headers, an attacker can inject a malicious IP address, leading to the retrieval of phpinfo() output. This function reveals server configuration details, including installed modules, PHP version, and environment variables, potentially exposing sensitive information to attackers.
Specifically, the issues are found within the ApiController.php file, potentially around these areas:
- Line 225 in ApiController.php: Likely related to how IP addresses are retrieved from HTTP headers.
- Line 260 in ApiController.php: Possibly where the retrieved IP address is used without validation.
CVSS Analysis
- CVE ID: CVE-2025-12039
- Severity: MEDIUM
- CVSS Score: 5.3
- Vector String (Example – may vary slightly): CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
A CVSS score of 5.3 indicates a Medium severity. This score reflects the ease of exploitation (no authentication required, low attack complexity) and the potential impact (confidentiality: limited, integrity: none, availability: none). The ability to retrieve phpinfo() output constitutes a limited confidentiality impact.
Possible Impact
Successful exploitation of this vulnerability allows unauthenticated attackers to:
- Retrieve sensitive server configuration information through the
phpinfo()output. - Potentially identify other vulnerabilities based on the revealed information (e.g., outdated software versions).
- Gather intelligence for future attacks.
Mitigation or Patch Steps
The recommended mitigation is to update the BigBuy Dropshipping Connector for WooCommerce plugin to the latest version as soon as a patched version becomes available. This will include proper IP address validation and sanitization of HTTP headers.
In the interim, consider implementing the following workaround (although updating is the primary recommendation):
- Implement stricter IP address validation on the server-side, outside of the plugin itself. This can involve using server-level firewall rules or web application firewall (WAF) configurations to filter requests based on IP address.
- Disable access to
phpinfo()on the server if it’s not absolutely necessary.
