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Microsoft Identity Model Extensions Token Signing Verification Advisory (3214296)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
This host is missing an important security update according to Microsoft advisory (3214296).
Insight
Insight
The flaw is due to tokens signed with symmetric keys could be vulnerable to tampering. If a token signed with a symmetric key is used to verify the identity of a user, and the app makes decisions based on the verified identity of that user, then the app could make incorrect decisions.
Affected Software
Affected Software
Microsoft.IdentityModel.Tokens package version 5.1.0 on Microsoft .NET Core or .NET Framework project.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Upgrade to Microsoft.IdentityModel.Tokens version 5.1.1 or later. Please see the references for more info.