Auth bypass in Grafana
CVE-2021-28148
One of the usage insights HTTP API endpoints in Grafana Enterprise 6.x before 6.7.6, 7.x before 7.3.10, and 7.4.x before 7.4.5 is accessible without any authentication. This allows any unauthenticated user to send an unlimited number of requests to the endpoint, leading to a denial of service (DoS) attack against a Grafana Enterprise instance.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.035 (88.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- community.grafana.com/t/release-notes-v6-7-x/27119 (Release Notes, Vendor Advisory)
- grafana.com/products/enterprise/ (Product, Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/03/19/5 (Mailing List, Third Party Advisory)
- grafana.com/blog/2021/03/18/grafana-6.7.6-7.3.10-and-7.4.5-released-with-import… (Release Notes, Vendor Advisory)
- community.grafana.com/t/grafana-enterprise-6-7-6-7-3-10-and-7-4-5-security-upda… (Vendor Advisory)
- grafana.com/docs/grafana/latest/release-notes/release-notes-7-3-10/ (Release Notes, Vendor Advisory)
- grafana.com/docs/grafana/latest/release-notes/release-notes-7-4-5/ (Release Notes, Vendor Advisory)
- security.netapp.com/advisory/ntap-20210430-0005/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28148?
- CVE-2021-28148 is a high-severity vulnerability in Grafana, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2021-03-22.
- How severe is CVE-2021-28148?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-28148 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.