Vulnerability CVE-2020-27846
Published: 2020-12-21

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.

Type:

CWE-115

 (Misinterpretation of Input)

CVSS2 => (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
10/10
10/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Saml project -> SAML 
Redhat -> Openshift container platform 
Redhat -> Openshift service mesh 
Redhat -> Enterprise linux 
Grafana -> Grafana 

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=1907670
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://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
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