CVE-2023-41890

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Summary

CVECVE-2023-41890
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-19 15:15:00 UTC
Updated2023-09-22 15:06:00 UTC
DescriptionSustainsys.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.

Risk And Classification

Problem Types: CWE-289

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Simplesamlphp Saml2 All All All All

References

ReferenceSourceLinkTags
Reserved Issue# · Issue #713 · Sustainsys/Saml2 · GitHub MISC github.com
Reserved Issue# · Issue #712 · Sustainsys/Saml2 · GitHub MISC github.com
Insufficient Identity Provider Issuer Validation · Advisory · Sustainsys/Saml2 · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 995308 DotNet (Nuget) Security Update for Sustainsys.Saml2 (GHSA-fv2h-753j-9g39)
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