Podatność CVE-2020-5261
Publikacja: 2020-03-25

Opis:
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.

Typ:

CWE-294

 (Authentication Bypass by Capture-replay)

CVSS2 => (AV:N/AC:M/Au:S/C:P/I:P/A:N)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
4.9/10
4.9/10
6.8/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Zdalny
Średnia
Jednorazowa
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Częściowy
Częściowy
Brak
Affected software
Simplesamlphp -> Saml2 

 Referencje:
https://github.com/Sustainsys/Saml2/commit/e58e0a1aff2b1ead6aca080b7cdced55ee6d5241
https://github.com/Sustainsys/Saml2/issues/711
https://github.com/Sustainsys/Saml2/security/advisories/GHSA-g6j2-ch25-5mmv
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