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CVE-2020-27846

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Date: December 21, 2020

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.

Language: Go

Severity Score

Related Resources (18)

https://security.netapp.com/advisory/ntap-20210205-0002/
https://access.redhat.com/security/cve/CVE-2020-27846
https://nvd.nist.gov/vuln/detail/CVE-2020-27846
https://github.com/crewjam/saml/commit/da4f1a0612c0a8dd0452cf8b3c7a6518f6b4d053
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM/
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://github.com/crewjam/saml
https://pkg.go.dev/vuln/GO-2021-0058
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI
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@lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI/
https://bugzilla.redhat.com/show_bug.cgi?id=1907670
https://security.netapp.com/advisory/ntap-20210205-0002
https://www.mend.io/vulnerability-database/CVE-2020-27846

Severity Score

Weakness Type (CWE)

Authentication Issues

CWE-287

Misinterpretation of Input

CWE-115

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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