An authentication bypass vulnerability exists in Windows Communication Foundation (WCF) and Windows Identity Foundation (WIF), allowing signing of SAML tokens with arbitrary symmetric keys, aka 'WCF/WIF SAML Token Authentication Bypass Vulnerability'.
An authentication bypass vulnerability exists in Windows Communication Foundation (WCF) and Windows Identity Foundation (WIF), allowing signing of SAML tokens with arbitrary symmetric keys, aka 'WCF/WIF SAML Token Authentication Bypass Vulnerability'.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows | 7 for 32-bit Systems Service Pack 1, 7 for x64-based Systems Service Pack 1, 8.1 for 32-bit systems, 8.1 for x64-based systems, RT 8.1, 10 for 32-bit Systems, 10 for x64-based Systems, 10 Version 1607 for 32-bit Systems, 10 Version 1607 for x64-based Systems, 10 Version 1703 for 32-bit Systems, 10 Version 1703 for x64-based Systems, 10 Version 1709 for 32-bit Systems, 10 Version 1709 for x64-based Systems, 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for 32-bit Systems, 10 Version 1809 for x64-based Systems, 10 Version 1809 for ARM64-based Systems, 10 Version 1709 for ARM64-based Systems |
| Microsoft | Windows Server | 2008 R2 for x64-based Systems Service Pack 1 (Core installation), 2008 R2 for Itanium-Based Systems Service Pack 1, 2008 R2 for x64-based Systems Service Pack 1, 2008 for 32-bit Systems Service Pack 2 (Core installation), 2012, 2012 (Core installation), 2012 R2, 2012 R2 (Core installation), 2016, 2016 (Core installation), version 1803 (Core Installation), 2019, 2019 (Core installation), 2008 for Itanium-Based Systems Service Pack 2, 2008 for 32-bit Systems Service Pack 2, 2008 for x64-based Systems Service Pack 2, 2008 for x64-based Systems Service Pack 2 (Core installation) |
| Microsoft | Microsoft SharePoint Foundation | 2010 Service Pack 2, 2013 Service Pack 1 |
| Microsoft | Microsoft .NET Framework 4.5.2 | Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012 R2 (Server Core installation), Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2 |
| Microsoft | Microsoft .NET Framework 4.6 | Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2 |
| Microsoft | Microsoft SharePoint Enterprise Server | 2016, 2013 Service Pack 1 |
| Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2 | Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems |
| Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 | Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012 R2 (Server Core installation) |
| Microsoft | Microsoft SharePoint Server | 2019 |
| Microsoft | Windows 10 Version 1903 for 32 | bit Systems — unspecified |
| Microsoft | Windows 10 Version 1903 for x64 | based Systems — unspecified |
| Microsoft | Windows 10 Version 1903 for ARM64 | based Systems — unspecified |
| Microsoft | Windows Server, version 1903 (Server Core installation) | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for 32 | bit Systems Service Pack 1 — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 7 for x64 | based Systems Service Pack 1 — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64 | based Systems Service Pack 1 (Server Core installation) — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64 | based Systems Service Pack 1 — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for 32 | bit systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 8.1 for x64 | based systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows RT 8.1 | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1703 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1709 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows 10 Version 1803 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 4.8 on Windows Server, version 1803 (Server Core Installation) | unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1903 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 on Windows Server, version 1903 (Server Core installation) | 1903 |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32 | bit Systems — unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64 | based Systems — unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | unspecified |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | unspecified |
| Microsoft | Microsoft.IdentityModel | 7.0.0 |
| Microsoft | Microsoft .NET Framework 3.5 | Windows Server 2012, Windows Server 2012 (Server Core installation), Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows Server 2016, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 (Server Core installation), Windows 10 Version 1703 for 32-bit Systems, Windows 10 Version 1703 for x64-based Systems, Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709 for x64-based Systems, Windows 10 Version 1803 for 32-bit Systems, Windows 10 Version 1803 for x64-based Systems, Windows Server, version 1803 (Server Core Installation) |
| Microsoft | Microsoft .NET Framework 3.0 | Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 |
| Microsoft | Microsoft .NET Framework 2.0 | Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 |
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.