CVE Vulnerability

CVE-2020-27847

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1907732 Issue Tracking Third Party Advisory
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5 Patch Third Party Advisory
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*
Information

Published : 2021-05-28 11:15

Updated : 2021-06-02 04:32

NVD link : CVE-2020-27847

Mitre link : CVE-2020-27847

Products Affected
No products.
CWE
CWE-228

Improper Handling of Syntactically Invalid Structure

CWE-290

Authentication Bypass by Spoofing