Vulnerability Monitor

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CVE-2021-43813

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.

Published

2021-12-10T18:15:08.260

Last Modified

2024-11-21T06:29:50.773

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-22
Type: Primary
CWE-22

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	grafana	grafana	< 7.5.12	Yes
Application	grafana	grafana	< 8.3.2	Yes

References

http://www.openwall.com/lists/oss-security/2021/12/10/4 Mailing List, Patch, Release Notes, Third Party Advisory ([email protected])
https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0f Broken Link ([email protected])
https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308d Patch, Third Party Advisory ([email protected])
https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2q Patch, Release Notes, Third Party Advisory ([email protected])
https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/ Patch, Release Notes, Vendor Advisory ([email protected])
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/ Release Notes, Vendor Advisory ([email protected])
https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/ Release Notes, Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20220107-0006/ Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/12/10/4 Mailing List, Patch, Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/github/securitylab-vulnerabilities/commit/689fc5d9fd665be4d5bba200a6a433b532172d0f Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308d Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/grafana/grafana/security/advisories/GHSA-c3q8-26ph-9g2q Patch, Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix/ Patch, Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://grafana.com/docs/grafana/latest/release-notes/release-notes-7-5-12/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://grafana.com/docs/grafana/latest/release-notes/release-notes-8-3-2/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20220107-0006/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)