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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:sustainsys:saml2:*:*:*:*:*:*:*:*", "matchCriteriaId": "E920AE48-2FCB-479F-AA28-CD7AA3B548AD", "versionEndExcluding": "1.0.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:sustainsys:saml2:*:*:*:*:*:*:*:*", "matchCriteriaId": "0DDDAA6B-BAB1-4BAA-97C8-65A2F3F9244C", "versionEndExcluding": "2.7.0", "versionStartIncluding": "2.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "In Saml2 Authentication Services for ASP.NET versions before 1.0.2, and between 2.0.0 and 2.6.0, there is a vulnerability in how tokens are validated in some cases. Saml2 tokens are usually used as bearer tokens - a caller that presents a token is assumed to be the subject of the token. There is also support in the Saml2 protocol for issuing tokens that is tied to a subject through other means, e.g. holder-of-key where possession of a private key must be proved. 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