Critical severity · published Dec 21, 2020
CVE-2020-27846
A signature verification vulnerability exists in crewjam/saml
9.8
CVSS
4.9%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.9% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Grafana · Grafana
before 6.7.5; 7.0.0 before 7.2.3; 7.3.0 before 7.3.6 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
FE
Fedora · Fedoraproject
32; 33 · source: NVD
OC
Openshift Container Platform · Redhat
3.11; 4.0 · source: NVD
OS
Openshift Service Mesh · Redhat
2.0 · source: NVD
SA
Saml · Saml Project
before 0.4.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27846
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27846
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1907670
Third Party Advisory
https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9
Vendor Advisory
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/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM/
Exploit
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
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