CVE-2020-27846
Aliases:GHSA-4hq8-gmxx-h6w9BIT-grafana-2020-27846GO-2021-0058
Advisory lineage Upstream: 0 Downstream: 1
Downstream
Modified
Published: 21 Dec 2020, 15:16
Last modified:04 Aug 2024, 16:25
Vulnerability Summary
Overall Risk (default)
critical
90/100 CVSS Score
10 HIGH
v2.0 (nvd)
EPSS Score
7.54% LOW
8% probability -0.19%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected
Timeline
21 Dec 2020, 15:16
Published
Vulnerability first disclosed
04 Aug 2024, 16:25
Last Modified
Vulnerability information updated
Description
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.
CVSS Metrics
- v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- v2.0•HIGH•Score: 10AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS Trends
Current EPSS score: 7.54%• Percentile: 92%
Techniques & Countermeasures
- CWE-115•Misinterpretation of Input
The product misinterprets an input, whether from an attacker or another product, in a security-relevant fashion.
Affected Systems
- fedoraproject•fedora
32 | 33
- github.com/crewjam•saml
< 0.4.3
- grafana•grafana
< 6.7.5 | ≥ 7.0.0, < 7.2.3 | ≥ 7.3.0, < 7.3.6
- redhat•enterprise_linux
8.0
- redhat•openshift_container_platform
3.11 | 4.0
- redhat•openshift_service_mesh
2.0
- saml_project•saml
< 0.4.3
References (16)
- https://bugzilla.redhat.com/show_bug.cgi?id=1907670
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
- https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9
- https://grafana.com/blog/2020/12/17/grafana-6.7.5-7.2.3-and-7.3.6-released-with-important-security-fix-for-grafana-enterprise/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM/
- https://security.netapp.com/advisory/ntap-20210205-0002/
- https://nvd.nist.gov/vuln/detail/CVE-2020-27846
- https://github.com/crewjam/saml/commit/da4f1a0612c0a8dd0452cf8b3c7a6518f6b4d053
- https://github.com/crewjam/saml
- https://grafana.com/blog/2020/12/17/grafana-6.7.5-7.2.3-and-7.3.6-released-with-important-security-fix-for-grafana-enterprise
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
- https://pkg.go.dev/vuln/GO-2021-0058
- https://security.netapp.com/advisory/ntap-20210205-0002