FGAC API Key privilege escalation in Grafana

Grafana is an open-source platform for monitoring and observability. When fine-grained access control is enabled and a client uses Grafana API Key to make requests, the permissions for that API Key are cached for 30 seconds for the given organization. Because of the way the cache ID is constructed, the consequent requests with any API Key evaluate to the same permissions as the previous requests. This can lead to an escalation of privileges, when for example a first request is made with Admin permissions, and the second request with different API Key is made with Viewer permissions, the second request will get the cached permissions from the previous Admin, essentially accessing higher privilege than it should. The vulnerability is only impacting Grafana Enterprise when the fine-grained access control beta feature is enabled and there are more than one API Keys in one organization with different roles assigned. All installations after Grafana Enterprise v8.1.0-beta1 should be upgraded as soon as possible. As an alternative, disable fine-grained access control will mitigate the vulnerability.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

特权管理不恰当

Grafana 安全漏洞

Grafana是Grafana实验室的一套提供可视化监控界面的开源监控工具。该工具主要用于监控和分析Graphite、InfluxDB和Prometheus等。 Grafana Enterprise 8.1.0-beta1 至 8.4.5 版本存在安全漏洞，该漏洞源于启用了细粒度访问控制测试版功能，并且至少有两个具有不同角色的 API 密钥。客户端使用 Grafana API 密钥发出请求以获取先前请求的权限，这可能导致权限升级，具体取决于上一个请求的权限。

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