Skip to content

Authentication Bypass in dex

Critical severity GitHub Reviewed Published Dec 20, 2021 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

gomod github.com/dexidp/dex (Go)

Affected versions

< 2.27.0

Patched versions

2.27.0

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.

References

Published by the National Vulnerability Database May 28, 2021
Reviewed Jun 1, 2021
Published to the GitHub Advisory Database Dec 20, 2021
Last updated Feb 1, 2023

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2020-27847

GHSA ID

GHSA-2x32-jm95-2cpx

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.