Critical Security Update for Grafana: Addressing Multiple Denial of Service Vulnerabilities
Summary
ALSA-2026:62407: Important: grafana security update. Affects grafana versions < 9.2.10-33.el8_10. Fixed in 9.2.10-33.el8_10. How to fix ↓
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Background
Grafana is an open-source platform designed for monitoring and visualizing metrics from various data sources such as Graphite, InfluxDB, and OpenTSDB. It provides a rich set of features including customizable dashboards, alerting capabilities, and support for various data visualization formats. However, recent vulnerabilities have been identified that could potentially compromise the stability and security of Grafana installations.
Vulnerability Detail
The vulnerabilities in Grafana stem from various components of the Go programming language, which Grafana relies on. These include Denial of Service (DoS) vulnerabilities due to pathological email address parsing, crafted email inputs, excessive recursion in ASN.1 unmarshalling, and quadratic complexity in URL path resolution. Attackers could exploit these vulnerabilities to disrupt service availability, leading to significant downtime and potential data loss.
How To Fix
Minimum fixed version
9.2.10-33.el8_10
This is the first release that contains the fix.
sudo dnf update grafanaTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, consider restricting access to the Grafana service or implementing rate limiting to mitigate the impact of potential DoS attacks until the update can be applied.
Conclusion
In summary, Grafana has critical vulnerabilities that could lead to Denial of Service attacks. It is crucial to update to the latest patched version to ensure the security and stability of your Grafana installation. Additionally, utilizing tools like Vulert can help monitor and alert for open-source vulnerabilities in your software.
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FAQ
The main vulnerabilities include Denial of Service issues related to email parsing, excessive recursion in ASN.1 decoding, and quadratic complexity in URL path resolution.
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These vulnerabilities can lead to service disruptions, making Grafana unavailable to users, which can affect monitoring and alerting capabilities.
Yes, a patch is available in version 9.2.10-33.el8_10 for both Grafana and grafana-selinux packages.
If you cannot update immediately, consider implementing access restrictions or rate limiting to minimize the risk of exploitation.
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