Overview
The CVE-2025-5277 vulnerability is a severe issue that affects the MCP server of aws-mcp-server. It poses a significant risk due to its ability to allow a potential attacker to execute arbitrary commands on the host system. This command injection vulnerability can lead to system compromise or catastrophic data leakage, affecting businesses and organizations that utilize aws-mcp-server. Given the current widespread use of AWS services, the impact of this vulnerability is far-reaching, warranting urgent attention and mitigation.
Vulnerability Summary
CVE ID: CVE-2025-5277
Severity: Critical (9.6/10)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: System compromise and potential data leakage
Affected Products
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Product | Affected Versions
aws-mcp-server | All versions prior to patch
How the Exploit Works
The exploit works by an attacker crafting a malicious prompt that, once accessed by the MCP client, will execute arbitrary commands on the host system. This is a classic example of command injection, a type of application vulnerability that allows an attacker to manipulate an application’s data to issue system-level instructions.
Conceptual Example Code
A conceptual example of this exploit could be an attacker crafting a malicious HTTP request that can be executed upon access. This could look something like the following:
POST /mcp-prompt/execute HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "prompt": "; rm -rf /;" }In the above example, the attacker crafted a JSON object with a `prompt` key, and the value is a malicious command `; rm -rf /;` which will delete all files on the server if executed.
Mitigation
The most recommended mitigation for CVE-2025-5277 is to apply the patch provided by the vendor. Users of aws-mcp-server should update their systems to the latest version which includes a fix for this vulnerability. If this is not possible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as a temporary mitigation. These systems can be configured to block or alert on traffic that appears to be attempting to exploit this vulnerability.
However, these are just temporary measures and do not fully solve the problem. The ultimate solution is to patch the system and ensure it is up-to-date to prevent such command injection vulnerabilities.
Conclusion
In conclusion, given the high severity score and the potential impact of CVE-2025-5277, it is crucial for organizations and individuals using aws-mcp-server to take immediate action in mitigating this vulnerability. By understanding how this exploit works and implementing the recommended mitigation strategies, the risk of system compromise or data leakage can be significantly reduced. Regardless, it is always a good practice to keep all systems and applications updated to the latest versions and to regularly perform security assessments to uncover and address any potential vulnerabilities.