GHSA-g6j2-ch25-5mmv
Missing Token Replay Detection in Saml2 Authentication services for ASP.NET
Quick fix
GHSA-g6j2-ch25-5mmv — Sustainsys.Saml2: upgrade to the fixed version with the command below.
dotnet add package Sustainsys.Saml2 --version 2.5.0Details
### Impact Token Replay Detection is an important defence in depth measure for Single Sign On solutions. In all previous 2.X versions, the Token Replay Detection is not properly implemented.
Note that version 1.0.1 is not affected. It has a correct Token Replay Implementation and is safe to use.
### Patches The 2.5.0 version is patched.
### Workarounds There are no workarounds with existing versions. Fixing the issue requires code updates.
### References https://en.wikipedia.org/wiki/Replay_attack
### For more information If you have any questions or comments about this advisory: * Comment on #711. * Email us at [security@sustainsys.com](mailto:security@susatinsys.com) if you think that there are further security issues.
Are you affected?
Enter the version of the package you're using.
Affected packages
2.0.0Fixed in: 2.5.0dotnet add package Sustainsys.Saml2 --version 2.5.0