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CVE-2021-43813— Directory Traversal in Grafana

Quick assessment

Affected
grafana grafana
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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存在路径遍历漏洞，该漏洞源于在版本8.3.2和7.5.12之前的Grafana包含一个目录遍历漏洞，用于完全小写或完全大写的。md文件。该漏洞的范围有限，只允许通过身份验证的用户访问扩展名为.md的文件。Grafana云实例没有受到该漏洞的影响。用户应该升级到补丁版本8.3.2或7.5.12。对于无法升级的用户，在Grafana前面

CVSS 4.3 · Medium EPSS 57.99% · P99

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2021-43813

Vulnerability Information
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Vulnerability Title
Directory Traversal in Grafana
Source: CVE Program / CVE List V5
Vulnerability Description
Grafana is an open-source platform for monitoring and observability. Grafana prior to versions 8.3.2 and 7.5.12 contains a directory traversal vulnerability for fully lowercase or fully uppercase .md files. The vulnerability is limited in scope, and only allows access to files with the extension .md to authenticated users only. Grafana Cloud instances have not been affected by the vulnerability. Users should upgrade to patched versions 8.3.2 or 7.5.12. For users who cannot upgrade, running a reverse proxy in front of Grafana that normalizes the PATH of the request will mitigate the vulnerability. The proxy will have to also be able to handle url encoded paths. Alternatively, for fully lowercase or fully uppercase .md files, users can block /api/plugins/.*/markdown/.* without losing any functionality beyond inlined plugin help text.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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存在路径遍历漏洞，该漏洞源于在版本8.3.2和7.5.12之前的Grafana包含一个目录遍历漏洞，用于完全小写或完全大写的。md文件。该漏洞的范围有限，只允许通过身份验证的用户访问扩展名为.md的文件。Grafana云实例没有受到该漏洞的影响。用户应该升级到补丁版本8.3.2或7.5.12。对于无法升级的用户，在Grafana前面
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
grafana grafana >= 5.0.0, < 7.5.12 -

II. Public POCs for CVE-2021-43813

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III. Intelligence Information for CVE-2021-43813

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Patches & Fixes for CVE-2021-43813 (2)

Vendor Advisories for CVE-2021-43813 (2)

Mailing List Discussions for CVE-2021-43813 (1)

Security Blog Posts for CVE-2021-43813 (1)

Other References for CVE-2021-43813 (2)

IV. Related Vulnerabilities

Same product: grafana
Same vendor: grafana
Same weakness: CWE-22

V. Comments for CVE-2021-43813

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