Authentication Bypass by Alternate Name Affecting sustainsys.saml2 package, versions [,1.0.3)[2.0.0,2.9.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.6% (44th percentile)

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  • Snyk IDSNYK-DOTNET-SUSTAINSYSSAML2-5906736
  • published27 Sept 2023
  • disclosed19 Sept 2023
  • creditc53robin

Introduced: 19 Sep 2023

CVE-2023-41890  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade Sustainsys.Saml2 to version 1.0.3, 2.9.2 or higher.

Overview

Sustainsys.Saml2 is a SAML2 protocol support.

Affected versions of this package are vulnerable to Authentication Bypass by Alternate Name due to improper validation in the AcsCommandResultCreated() function. An attacker can craft a SAML2 response that is processed as if issued by another identity provider.

CVSS Base Scores

version 3.1