Vulnerability in Grafana
CVE-2020-27846
A signature verification vulnerability exists in crewjam/saml. This flaw allows an attacker to bypass SAML Authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.049 (92.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000
Affected products
- Grafana
- Saml Project
- Fedoraproject Fedora — versions 32, 33
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Openshift Container Platform — versions 3.11, 4.0
- Red Hat Openshift Service Mesh — versions 2.0
- Crewjam/saml — versions grafana-7.3.6, grafana-7.2.3, grafana-6.7.5, github.com/crewjam/saml-0.4.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ (Exploit, Third Party Advisory)
- github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9 (Third Party Advisory)
- grafana.com/blog/2020/12/17/grafana-6.7.5-7.2.3-and-7.3.6-released-with-importa… (Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.netapp.com/advisory/ntap-20210205-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27846?
- CVE-2020-27846 is a critical-severity vulnerability in Grafana, classified under CWE-115. CVSS score: 9.8/10. Published 2020-12-21.
- How severe is CVE-2020-27846?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-27846 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.