Ethical Hacking News
Grafana has issued a critical security update for its Image Renderer plugin due to four newly discovered Chromium vulnerabilities, including type confusion bugs, use-after-free issues, and integer overflow vulnerabilities. The update is essential for ensuring the security of Grafana instances in production environments.
The Grafana Labs has announced a critical security update for its Image Renderer plugin due to four Chromium vulnerabilities (CVE-2025-5959, CVE-2025-6554, CVE-2025-6191, and CVE-2025-6192).The updates address type confusion bugs, integer overflow vulnerabilities, use-after-free vulnerabilities, and remote code execution via malicious HTML pages.Users relying on the plugin in production environments are at risk due to automated dashboard rendering for scheduled email reports and embedding in third-party systems.A large number of users may be affected without realizing it, as the Image Rendered plugin has millions of downloads and is officially maintained by the project.Users are advised to apply the latest version of the plugin (3.12.9) using `grafana-cli plugins install grafana-image-renderer` or `docker pull grafana/grafana-image-renderer:3.12.9` for container installations.Grafana Cloud and Azure Managed Grafana instances have also been patched, so users relying on these environments do not need to take any additional action.
Grafana Labs has announced a critical security update for its Image Renderer plugin, which is used to render images in various environments. The update addresses four Chromium vulnerabilities, specifically CVE-2025-5959, CVE-2025-6554, CVE-2025-6191, and CVE-2025-6192, which pose significant risks to users of the plugin.
According to Grafana Labs, these vulnerabilities were discovered by security researcher Alex Chapman, who submitted a bug bounty report that demonstrated the exploitability of the issues in the Grafana components. The updates are described as "critical severity" releases, emphasizing the need for immediate attention and application of the fixes.
The four Chromium vulnerabilities addressed by this update can be summarized as follows:
1. **Type Confusion Bug (CVE-2025-5959)**: This vulnerability allows remote code execution inside a sandbox via a crafted HTML page. The V8 JavaScript and WebAssembly engine is affected, making it possible for attackers to inject malicious code into the application.
2. **Type Confusion in V8 (CVE-2025-6554)**: This vulnerability enables attackers to perform arbitrary memory read/write operations through a malicious HTML page. The impact of this vulnerability can be significant, as it allows attackers to access sensitive data or execute malicious code.
3. **Integer Overflow Vulnerability (CVE-2025-6191)**: This vulnerability causes an out-of-bounds memory access, potentially leading to code execution. The V8 engine is again implicated in the vulnerability, which can allow attackers to inject malicious code into the application.
4. **Use-after-Free Vulnerability (CVE-2025-6192)**: This vulnerability occurs when Chrome's Metrics component tries to use a freed resource, potentially causing heap corruption and allowing attackers to exploit the issue.
The security implications of these vulnerabilities are significant, particularly for organizations that rely on the Grafana Image Renderer plugin in production environments. Automated dashboard rendering for scheduled email reports and embedding in third-party systems are crucial functions of this plugin, making them vulnerable to exploitation by attackers.
Furthermore, even though the Image Rendered plugin is not bundled by default with Grafana, it has millions of downloads and is officially maintained by the project. This means that a large number of users may be affected by these vulnerabilities without realizing it.
The Synthetic Monitoring Agent, another component affected by the update, is part of Grafana Cloud's Synthetic Monitoring solution. Used by customers who require custom probe locations, low-latency checks from internal nodes, and high-visibility tests for enterprises with hybrid or multi-cloud infrastructure, this vulnerability can also have serious consequences.
To mitigate these risks, users are advised to apply the latest version of the Image Rendered plugin as soon as possible. The updated version is 3.12.9, and users can install it using the command `grafana-cli plugins install grafana-image-renderer`. For container installations, users can use the command `docker pull grafana/grafana-image-renderer:3.12.9`.
Similarly, users of the Synthetic Monitoring Agent can download the latest version from GitHub. The updated version is 0.38.3-browser.
Grafana Cloud and Azure Managed Grafana instances have also been patched, meaning that users relying on these environments do not need to take any additional action.
However, it is worth noting that past incidents highlight the importance of prompt attention to security update notices. In a recent incident, over 46,000 Grafana instances remained vulnerable to an account takeover flaw with a public exploit for which the vendor released fixes in May.
As we navigate the complex and ever-evolving landscape of cybersecurity threats, it is essential to stay vigilant and proactive. The update announced by Grafana Labs serves as a reminder of the need for constant vigilance and prompt action when faced with security vulnerabilities.
In conclusion, the recent critical security update for the Grafana Image Renderer plugin highlights the importance of staying informed about potential security threats and taking immediate action to protect against them. By understanding the risks associated with these Chromium vulnerabilities and applying the necessary updates, users can significantly reduce their exposure to potential attacks.
Related Information:
https://www.ethicalhackingnews.com/articles/Grafana-Image-Renderer-Plugin-Faces-Critical-Security-Threat-A-Closer-Look-at-Chromium-Vulnerabilities-ehn.shtml
https://www.bleepingcomputer.com/news/security/grafana-releases-critical-security-update-for-image-renderer-plugin/
https://grafana.com/blog/2025/05/21/grafana-security-release-high-severity-security-fix-for-cve-2025-4123/
https://nvd.nist.gov/vuln/detail/CVE-2025-5959
https://www.cvedetails.com/cve/CVE-2025-5959/
https://nvd.nist.gov/vuln/detail/CVE-2025-6554
https://www.cvedetails.com/cve/CVE-2025-6554/
https://nvd.nist.gov/vuln/detail/CVE-2025-6191
https://www.cvedetails.com/cve/CVE-2025-6191/
https://nvd.nist.gov/vuln/detail/CVE-2025-6192
https://www.cvedetails.com/cve/CVE-2025-6192/
Published: Thu Jul 3 13:13:53 2025 by llama3.2 3B Q4_K_M
