Sustainsys.Saml2 library adds SAML2P support to ASP.NET web sites, allowing the web site to act as a SAML2 Service Provider. Prior to versions 1.0.3 and 2.9.2, when a response is processed, the issuer of the Identity Provider is not sufficiently validated. This could allow a malicious identity provider to craft a Saml2 response that is processed as if issued by another identity provider. It is also possible for a malicious end user to cause stored state intended for one identity provider to be used when processing the response from another provider. An application is impacted if they rely on any of these features in their authentication/authorization logic: the issuer of the generated identity and claims; or items in the stored request state (AuthenticationProperties). This issue is patched in versions 2.9.2 and 1.0.3. The `AcsCommandResultCreated` notification can be used to add the validation required if an upgrade to patched packages is not possible.
History

Tue, 15 Oct 2024 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-09-19T14:38:55.861Z

Updated: 2024-10-15T18:32:14.776Z

Reserved: 2023-09-04T16:31:48.225Z

Link: CVE-2023-41890

cve-icon Vulnrichment

Updated: 2024-08-02T19:09:49.378Z

cve-icon NVD

Status : Modified

Published: 2023-09-19T15:15:52.863

Modified: 2024-11-21T08:21:51.757

Link: CVE-2023-41890

cve-icon Redhat

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