Grafana V0.0.0 Vulnerability: High Severity Alert!

Understanding the Security Risks in Grafana v0.0.0. This article dives deep into a critical security vulnerability discovered within the github.com/grafana/grafana-v0.0.0 software, specifically highlighting the impact of CVE-2025-47913. We will discuss the details of this high-severity vulnerability, its implications, and the recommended steps to mitigate the risks. This information is crucial for developers, system administrators, and anyone using or maintaining Grafana instances. Proper understanding and timely action are essential to protect systems against potential exploits. By staying informed and proactive, you can ensure the security and stability of your Grafana deployments. The vulnerability affects the golang.org/x/crypto-v0.39.0 library, which is transitively used by Grafana. This article provides a comprehensive overview of the issue, including its root cause, potential impacts, and recommended solutions.

Vulnerability Overview: CVE-2025-47913

CVE-2025-47913 is the focal point of our discussion, a high-severity vulnerability impacting Grafana v0.0.0. The vulnerability stems from an issue within the golang.org/x/crypto-v0.39.0 library, a dependency used by Grafana. The implications of this vulnerability are significant, potentially leading to client process termination. The vulnerability arises from how the SSH client handles responses, specifically when expecting a typed response. Upon receiving an unexpected SSH_AGENT_SUCCESS message, the client will experience a panic, causing the abrupt termination of the client process. This can lead to disruption of services, denial of service, and potential data loss depending on how the SSH client is used within the Grafana ecosystem. The vulnerability is triggered over a network, making it remotely exploitable. The attack complexity is low, meaning it is relatively easy to execute. No special privileges are required for exploitation, and there's no user interaction needed. The impact on availability is high, which is the most critical aspect of this vulnerability. The vulnerability's impact can be severe, making it imperative to address it promptly. This information is intended to help users understand the extent of the security risk and implement the necessary patches.

Technical Details and Impact

The vulnerability primarily affects the availability of services. The attacker does not need to have any privileges nor to interact with the application. When an SSH client receives an unexpected SSH_AGENT_SUCCESS message while expecting a typed response, the application will panic. The impact of the vulnerability is the termination of the client's processes. This situation can bring a denial of service if the process is critical. The ease of exploitation, low attack complexity, and high impact on availability make this a high-priority security concern. It is crucial to understand that while there is no direct impact on confidentiality or integrity, the disruption in service availability can still lead to significant consequences. Addressing this vulnerability requires upgrading the golang.org/x/crypto library to a version that addresses the issue, which is detailed in the remediation steps. The vulnerability is a result of a flaw in how the SSH client handles specific types of responses and can have significant implications for any system utilizing the vulnerable library.

Identifying the Vulnerable Component: golang.org/x/crypto

golang.org/x/crypto-v0.39.0 is the vulnerable library at the heart of CVE-2025-47913. This library is used by Grafana, making it a critical component to address in security updates. The path to the vulnerable library within the affected system is identified to help users locate and verify the affected files and dependencies. The dependency hierarchy reveals that the vulnerability affects the entire system that utilizes golang.org/x/crypto-v0.39.0. This means that any part of Grafana that depends on this library can be affected. Understanding the library's role and its relation to Grafana is crucial for effective remediation. Knowing where the library is used helps administrators prioritize and implement the necessary patches quickly. The library's home page and the specific version affected are also noted to ensure users can correctly identify and verify their installations. The details within the vulnerability report also help users to cross-check their own systems.

Dependency Hierarchy and Affected Files

The dependency hierarchy shows the relationship between Grafana and the vulnerable library. The vulnerable library is a transitive dependency of the main Grafana application. The path to the vulnerable library within your system will be similar to /home/wss-scanner/go/pkg/mod/cache/download/golang.org/x/crypto/@v/v0.39.0.mod, which is a key piece of information to help verify the affected component within your system. Checking the file paths helps administrators confirm the presence of the vulnerable library within their Grafana installations. By understanding the dependency tree, you can trace the origin of the vulnerability and understand how it affects your environment. This information allows for a targeted approach to patching and upgrading. Locating and verifying the file paths are crucial steps to ensure that the vulnerability has been correctly identified within the system before applying the appropriate fix.

Remediation and Mitigation Steps

Mitigating CVE-2025-47913 is crucial to protect your Grafana instance. The recommended remediation step is to upgrade the golang.org/x/crypto library to version v0.43.0 or later. This patch addresses the vulnerability that causes SSH clients to terminate unexpectedly. Upgrading the library involves updating the dependency within your Grafana installation. This can typically be done using the Go package manager. It is essential to test the upgrade in a non-production environment before deploying it to a live system. This helps ensure that the update does not introduce any unintended issues or break existing functionality. Staying up-to-date with security patches is a fundamental practice in maintaining a secure environment. The release date of the fix, which is November 13, 2025, is a useful reference point. The fix is available at the provided URL (https://github.com/golang/crypto.git - v0.43.0). Adopting these proactive measures is key to minimizing security risks and ensuring the long-term stability of your Grafana deployments. Additionally, consider regularly reviewing security advisories and staying informed about the latest security threats to maintain a proactive security posture.

Step-by-Step Guide to Patching

1. Identify Your Grafana Installation: Determine where your Grafana instance is running and the associated Go modules. This involves finding the go.mod and go.work files to identify all dependencies, including the golang.org/x/crypto version. Verify that the current version is, indeed, v0.39.0.
2. Update the Dependency: Within your Grafana project, update the golang.org/x/crypto package to version v0.43.0 or a later version that contains the fix. This can typically be done using the go get command:

   go get golang.org/x/crypto@v0.43.0
   

   Ensure this command is executed within the root directory of your Grafana project.
3. Update Go Modules: After updating the dependency, run go mod tidy to update your go.mod and go.sum files. This ensures that all dependencies are consistent and up-to-date.
4. Test the Update: Before deploying the changes to a production environment, test them in a development or staging environment. This is critical to ensure that the update doesn't introduce any new issues or break existing functionality. Verify that the SSH clients function correctly after the update.
5. Deploy the Patch: Once testing is complete and successful, deploy the updated Grafana installation to your production environment. Monitor the system closely after deployment to ensure stability and proper functionality.
6. Verify the Fix: After deploying the patch, double-check that the golang.org/x/crypto package has indeed been updated to v0.43.0 or a later version. Use the go list -m golang.org/x/crypto command to verify the version.

By following these detailed steps, you can effectively patch your Grafana installation and mitigate the risks associated with CVE-2025-47913.

Conclusion

Securing Grafana installations against vulnerabilities like CVE-2025-47913 is an ongoing process. By understanding the risks, identifying the vulnerable components, and promptly applying the recommended fixes, you can significantly enhance the security posture of your systems. This proactive approach not only mitigates the immediate threats but also demonstrates a commitment to maintaining a secure and reliable infrastructure. Regular monitoring, security audits, and staying informed about the latest security advisories are essential practices. Always prioritize updating dependencies and promptly addressing known vulnerabilities to safeguard your systems against potential exploitation. Implementing the suggested remediation steps and following the guidelines outlined in this article will contribute to a more robust and secure Grafana environment.

For additional information on Go security best practices, check out the official Go documentation: Go Security Documentation