CVE-2020-5261

Missing Token Replay Detection

State
Published
Severity
8.2 High
Published
Mar 25, 2020
Updated
Aug 4, 2024
Reserved
Jan 2, 2020

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Description

Saml2 Authentication services for ASP.NET (NuGet package Sustainsys.Saml2) greater than 2.0.0, and less than version 2.5.0 has a faulty implementation of Token Replay Detection. Token Replay Detection is an important defence in depth measure for Single Sign On solutions. The 2.5.0 version is patched. Note that version 1.0.1 is not affected. It has a correct Token Replay Implementation and is safe to use. Saml2 Authentication services for ASP.NET (NuGet package Sustainsys.Saml2) greater than 2.0.0, and less than version 2.5.0 have a faulty implementation of Token Replay Detection. Token Replay Detection is an important defense measure for Single Sign On solutions. The 2.5.0 version is patched. Note that version 1.0.1 and prior versions are not affected. These versions have a correct Token Replay Implementation and are safe to use.

Scores

CVSSScoreVectorSource
3.18.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:NGitHub_M

Weaknesses

  • CWE-294 Authentication Bypass by Capture-replay

Affected Products

ProductVersions
Saml2Sustainsys
  • >= 2.0.0, < 2.5.0Affected

References

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