Horizon Alert
Summary of the vulnerability and why it matters
An unauthenticated arbitrary file upload vulnerability in CubeCart's REST API allows for the execution of malicious code on the server. This means an attacker could potentially take complete control of your e-commerce platform.
- This could lead to data theft.
- It impacts all CubeCart versions before 6.7.0.
- The vulnerability is reachable from the internet.
Attack Path
How an attacker could exploit the issue
An attacker with an API key possessing "files:rw" permissions can exploit this vulnerability to upload a webshell. By chaining a path traversal flaw with the file upload capability, they can place this webshell in a web-accessible directory, enabling remote code execution on the server.
- Requires API key with specific permissions.
- Targets REST API file manager endpoint.
- Uploads PHP webshell for RCE.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability allows for authenticated arbitrary file upload, leading to remote code execution, which is highly attractive to attackers. The flaw specifically targets an e-commerce platform, CubeCart, and permits writing webshells anywhere the webserver process has write access, including the document root. While the exploit requires an API key with specific permissions, the direct path to full system compromise makes it a significant threat once an attacker gains initial access.
- Remote code execution potential is high.
- Exploitation requires authenticated access.
- Fix is available in version 6.7.0.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Teams should prioritize blocking access to the affected REST API endpoint and immediately investigate any authenticated users or API keys with `files:rw` permissions. Given the critical nature of this vulnerability allowing for remote code execution, if evidence of exploitation or a high likelihood of compromise is found, affected services must be taken offline or isolated until CubeCart is updated to version 6.7.0 or later.
- Block network access to the API.
- Update CubeCart to 6.7.0.
- Monitor logs for unusual file uploads.
