CVE-2017-0248: High severity Microsoft .NET Framework vulnerability

Published May 12, 2017
·
Updated

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka ".NET Security Feature Bypass Vulnerability."

Affected Software

46 affected componentsFixes available
nuget/microsoft.aspnetcore.mvc.webapicompatshim>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.webapicompatshim>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.viewfeatures>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.viewfeatures>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.taghelpers>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.taghelpers>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.razor>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.razor>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.razor.host>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.razor.host>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.localization>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.localization>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.formatters.xml>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.formatters.xml>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.formatters.json>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.formatters.json>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.dataannotations>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.dataannotations>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.cors>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.cors>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.apiexplorer>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.apiexplorer>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc.abstractions>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.abstractions>=1.0.0<1.0.4
1.0.4
nuget/system.net.websockets.client=4.3.0
4.3.1
nuget/system.net.websockets.client=4.0.0
4.0.1
nuget/system.net.security=4.3.0
4.3.1
nuget/system.net.security=4.0.0
4.0.1
nuget/system.net.http.winhttphandler=4.3.0
4.3.1
nuget/system.net.http.winhttphandler=4.0.0
4.0.1
nuget/system.text.encodings.web=4.3.0
4.3.1
nuget/system.text.encodings.web=4.0.0
4.0.1
nuget/system.net.http=4.3.1
4.3.2
nuget/system.net.http=4.1.1
4.1.2
nuget/microsoft.aspnetcore.mvc.core>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc.core>=1.0.0<1.0.4
1.0.4
nuget/microsoft.aspnetcore.mvc>=1.1.0<1.1.3
1.1.3
nuget/microsoft.aspnetcore.mvc>=1.0.0<1.0.4
1.0.4
Microsoft .NET Framework=2.0-sp2
Microsoft .NET Framework=3.5
Microsoft .NET Framework=3.5.1
Microsoft .NET Framework=4.5.2
Microsoft .NET Framework=4.6
Microsoft .NET Framework=4.6.1
Microsoft .NET Framework=4.6.2
Microsoft .NET Framework=4.7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.WebApiCompatShim to a version that resolves this vulnerability.

    Fixed in 1.1.3
  2. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.WebApiCompatShim to a version that resolves this vulnerability.

    Fixed in 1.0.4
  3. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.ViewFeatures to a version that resolves this vulnerability.

    Fixed in 1.1.3
  4. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.ViewFeatures to a version that resolves this vulnerability.

    Fixed in 1.0.4
  5. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.TagHelpers to a version that resolves this vulnerability.

    Fixed in 1.1.3
  6. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.TagHelpers to a version that resolves this vulnerability.

    Fixed in 1.0.4
  7. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Razor to a version that resolves this vulnerability.

    Fixed in 1.1.3
  8. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Razor to a version that resolves this vulnerability.

    Fixed in 1.0.4
  9. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Razor.Host to a version that resolves this vulnerability.

    Fixed in 1.1.3
  10. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Razor.Host to a version that resolves this vulnerability.

    Fixed in 1.0.4
  11. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Localization to a version that resolves this vulnerability.

    Fixed in 1.1.3
  12. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Localization to a version that resolves this vulnerability.

    Fixed in 1.0.4
  13. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Formatters.Xml to a version that resolves this vulnerability.

    Fixed in 1.1.3
  14. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Formatters.Xml to a version that resolves this vulnerability.

    Fixed in 1.0.4
  15. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Formatters.Json to a version that resolves this vulnerability.

    Fixed in 1.1.3
  16. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Formatters.Json to a version that resolves this vulnerability.

    Fixed in 1.0.4
  17. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.DataAnnotations to a version that resolves this vulnerability.

    Fixed in 1.1.3
  18. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.DataAnnotations to a version that resolves this vulnerability.

    Fixed in 1.0.4
  19. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Cors to a version that resolves this vulnerability.

    Fixed in 1.1.3
  20. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Cors to a version that resolves this vulnerability.

    Fixed in 1.0.4
  21. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.ApiExplorer to a version that resolves this vulnerability.

    Fixed in 1.1.3
  22. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.ApiExplorer to a version that resolves this vulnerability.

    Fixed in 1.0.4
  23. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Abstractions to a version that resolves this vulnerability.

    Fixed in 1.1.3
  24. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Abstractions to a version that resolves this vulnerability.

    Fixed in 1.0.4
  25. Upgrade

    Upgrade nuget/System.Net.WebSockets.Client to a version that resolves this vulnerability.

    Fixed in 4.3.1
  26. Upgrade

    Upgrade nuget/System.Net.WebSockets.Client to a version that resolves this vulnerability.

    Fixed in 4.0.1
  27. Upgrade

    Upgrade nuget/System.Net.Security to a version that resolves this vulnerability.

    Fixed in 4.3.1
  28. Upgrade

    Upgrade nuget/System.Net.Security to a version that resolves this vulnerability.

    Fixed in 4.0.1
  29. Upgrade

    Upgrade nuget/System.Net.Http.WinHttpHandler to a version that resolves this vulnerability.

    Fixed in 4.3.1
  30. Upgrade

    Upgrade nuget/System.Net.Http.WinHttpHandler to a version that resolves this vulnerability.

    Fixed in 4.0.1
  31. Upgrade

    Upgrade nuget/System.Text.Encodings.Web to a version that resolves this vulnerability.

    Fixed in 4.3.1
  32. Upgrade

    Upgrade nuget/System.Text.Encodings.Web to a version that resolves this vulnerability.

    Fixed in 4.0.1
  33. Upgrade

    Upgrade nuget/System.Net.Http to a version that resolves this vulnerability.

    Fixed in 4.3.2
  34. Upgrade

    Upgrade nuget/System.Net.Http to a version that resolves this vulnerability.

    Fixed in 4.1.2
  35. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Core to a version that resolves this vulnerability.

    Fixed in 1.1.3
  36. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc.Core to a version that resolves this vulnerability.

    Fixed in 1.0.4
  37. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc to a version that resolves this vulnerability.

    Fixed in 1.1.3
  38. Upgrade

    Upgrade nuget/Microsoft.AspNetCore.Mvc to a version that resolves this vulnerability.

    Fixed in 1.0.4

Event History

May 12, 2017
CVE Published
via MITRE·02:00 PM
Data Sourced
via MITRE·02:00 PM
DescriptionWeakness
Oct 16, 2018
Advisory Published
via GitHub·07:58 PM

Frequently Asked Questions

1

What is the severity of CVE-2017-0248?

CVE-2017-0248 is rated as critical due to its potential to allow attackers to bypass security features.

2

How do I fix CVE-2017-0248?

To mitigate CVE-2017-0248, update your Microsoft .NET Framework to a version that is not vulnerable, such as 4.7 or later.

3

What versions of Microsoft .NET Framework are affected by CVE-2017-0248?

CVE-2017-0248 affects Microsoft .NET Framework versions 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, and 4.7.

4

Can CVE-2017-0248 affect applications using .NET Framework?

Yes, applications relying on the affected versions of the .NET Framework are vulnerable to CVE-2017-0248.

5

Is there a workaround for CVE-2017-0248 if I cannot immediately update?

While updating is the best solution, temporarily strengthening certificate validation might help mitigate the risk until a full update can be applied.

Company

Resources

Contact

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