CVE-2020-27846
First published: Tue Dec 15 2020(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Grafana Grafana | <6.7.5 | |
| Grafana Grafana | >=7.0.0<7.2.3 | |
| Grafana Grafana | >=7.3.0<7.3.6 | |
| Saml Project Saml | <0.4.3 | |
| Redhat Openshift Container Platform | =3.11 | |
| Redhat Openshift Container Platform | =4.0 | |
| Redhat Openshift Service Mesh | =2.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| redhat/grafana | <7.3.6 | 7.3.6 |
| redhat/grafana | <7.2.3 | 7.2.3 |
| redhat/grafana | <6.7.5 | 6.7.5 |
| redhat/github.com/crewjam/saml | <0.4.3 | 0.4.3 |
| redhat/grafana | <0:7.3.6-2.el8 | 0:7.3.6-2.el8 |
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Reference Links
- 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://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://security.netapp.com/advisory/ntap-20210205-0002/
- https://github.com/crewjam/saml/commit/da4f1a0612c0a8dd0452cf8b3c7a6518f6b4d053
- https://access.redhat.com/errata/RHSA-2020:5633
- https://access.redhat.com/security/cve/cve-2020-27846
- https://access.redhat.com/errata/RHSA-2021:1859
- https://www.cve.org/CVERecord?id=CVE-2020-27846 https://nvd.nist.gov/vuln/detail/CVE-2020-27846 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/
Frequently Asked Questions
What is CVE-2020-27846?
CVE-2020-27846 is a signature verification vulnerability in crewjam/saml that allows bypassing of SAML Authentication.
What is the severity of CVE-2020-27846?
CVE-2020-27846 has a severity value of 9, which is considered critical.
How does CVE-2020-27846 impact affected software?
CVE-2020-27846 can lead to confidentiality, integrity, and system availability issues in the affected software.
Which software versions are affected by CVE-2020-27846?
The affected software versions include grafana 0:7.3.6-2.el8, 7.3.6, 7.2.3, 6.7.5, and github.com/crewjam/saml 0.4.3.
How can I fix CVE-2020-27846?
To fix CVE-2020-27846, update the affected software to the recommended versions: grafana 7.3.6-2.el8, 7.3.6, 7.2.3, 6.7.5, and github.com/crewjam/saml 0.4.3.
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