CVE-2020-27847 Detail
Current Description
A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.
Analysis Description
A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.
Severity
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-290 | Authentication Bypass by Spoofing | Red Hat, Inc. |
| CWE-228 | Improper Handling of Syntactically Invalid Structure | Red Hat, Inc. |
Change History
1 change records found show changes
Initial Analysis 6/02/2021 12:32:08 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
OR
*cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:* versions up to (excluding) 2.27.0
|
|
| Added | CVSS V2 |
NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) |
|
| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
|
| Changed | Reference Type |
https://bugzilla.redhat.com/show_bug.cgi?id=1907732 No Types Assigned |
https://bugzilla.redhat.com/show_bug.cgi?id=1907732 Issue Tracking, Third Party Advisory |
| Changed | Reference Type |
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5 No Types Assigned |
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5 Patch, Third Party Advisory |
| Changed | Reference Type |
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ No Types Assigned |
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ Vendor Advisory |
Quick Info
CVE Dictionary Entry:
CVE-2020-27847
NVD Published Date:
05/28/2021
NVD Last Modified:
06/02/2021
Source:
Red Hat, Inc.