USN-6362-2: .Net regressions

Published Oct 25, 2023
·
Updated

USN-6362-1 fixed vulnerabilities in .Net. It was discovered that the fix for CVE-2023-36799 was incomplete. This update fixes the problem. Original advisory details: Kevin Jones discovered that .NET did not properly process certain X.509 certificates. An attacker could possibly use this issue to cause a denial of service.

Affected Software

48 affected componentsFixes available
All of the following
ubuntu/aspnetcore-runtime-6.0<6.0.124-0ubuntu1~23.04.1
6.0.124-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/aspnetcore-runtime-7.0<7.0.113-0ubuntu1~23.04.1
7.0.113-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-host<6.0.124-0ubuntu1~23.04.1
6.0.124-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-host-7.0<7.0.113-0ubuntu1~23.04.1
7.0.113-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-hostfxr-6.0<6.0.124-0ubuntu1~23.04.1
6.0.124-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-hostfxr-7.0<7.0.113-0ubuntu1~23.04.1
7.0.113-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-runtime-6.0<6.0.124-0ubuntu1~23.04.1
6.0.124-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-runtime-7.0<7.0.113-0ubuntu1~23.04.1
7.0.113-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-sdk-6.0<6.0.124-0ubuntu1~23.04.1
6.0.124-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet-sdk-7.0<7.0.113-0ubuntu1~23.04.1
7.0.113-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet6<6.0.124-0ubuntu1~23.04.1
6.0.124-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/dotnet7<7.0.113-0ubuntu1~23.04.1
7.0.113-0ubuntu1~23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/aspnetcore-runtime-6.0<6.0.124-0ubuntu1~22.04.1
6.0.124-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/aspnetcore-runtime-7.0<7.0.113-0ubuntu1~22.04.1
7.0.113-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-host<6.0.124-0ubuntu1~22.04.1
6.0.124-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-host-7.0<7.0.113-0ubuntu1~22.04.1
7.0.113-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-hostfxr-6.0<6.0.124-0ubuntu1~22.04.1
6.0.124-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-hostfxr-7.0<7.0.113-0ubuntu1~22.04.1
7.0.113-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-runtime-6.0<6.0.124-0ubuntu1~22.04.1
6.0.124-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-runtime-7.0<7.0.113-0ubuntu1~22.04.1
7.0.113-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-sdk-6.0<6.0.124-0ubuntu1~22.04.1
6.0.124-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet-sdk-7.0<7.0.113-0ubuntu1~22.04.1
7.0.113-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet6<6.0.124-0ubuntu1~22.04.1
6.0.124-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/dotnet7<7.0.113-0ubuntu1~22.04.1
7.0.113-0ubuntu1~22.04.1
Ubuntu Ubuntu=22.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~23.04.1
  2. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~23.04.1
  3. Upgrade

    Upgrade ubuntu/dotnet-host to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~23.04.1
  4. Upgrade

    Upgrade ubuntu/dotnet-host-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~23.04.1
  5. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~23.04.1
  6. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~23.04.1
  7. Upgrade

    Upgrade ubuntu/dotnet-runtime-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~23.04.1
  8. Upgrade

    Upgrade ubuntu/dotnet-runtime-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~23.04.1
  9. Upgrade

    Upgrade ubuntu/dotnet-sdk-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~23.04.1
  10. Upgrade

    Upgrade ubuntu/dotnet-sdk-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~23.04.1
  11. Upgrade

    Upgrade ubuntu/dotnet6 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~23.04.1
  12. Upgrade

    Upgrade ubuntu/dotnet7 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~23.04.1
  13. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~22.04.1
  14. Upgrade

    Upgrade ubuntu/aspnetcore-runtime-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~22.04.1
  15. Upgrade

    Upgrade ubuntu/dotnet-host to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~22.04.1
  16. Upgrade

    Upgrade ubuntu/dotnet-host-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~22.04.1
  17. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~22.04.1
  18. Upgrade

    Upgrade ubuntu/dotnet-hostfxr-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~22.04.1
  19. Upgrade

    Upgrade ubuntu/dotnet-runtime-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~22.04.1
  20. Upgrade

    Upgrade ubuntu/dotnet-runtime-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~22.04.1
  21. Upgrade

    Upgrade ubuntu/dotnet-sdk-6.0 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~22.04.1
  22. Upgrade

    Upgrade ubuntu/dotnet-sdk-7.0 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~22.04.1
  23. Upgrade

    Upgrade ubuntu/dotnet6 to a version that resolves this vulnerability.

    Fixed in 6.0.124-0ubuntu1~22.04.1
  24. Upgrade

    Upgrade ubuntu/dotnet7 to a version that resolves this vulnerability.

    Fixed in 7.0.113-0ubuntu1~22.04.1
  25. Upgrade

    Upgrade .NET to a version that resolves this vulnerability.

    Patch USN-6362-2

Event History

Oct 25, 2023
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the vulnerability ID for this advisory?

USN-6362-2

2

What does the USN-6362-2 advisory fix?

The USN-6362-2 advisory fixes a regression in .Net that was not properly fixed in the previous update (USN-6362-1).

3

What is the severity of the vulnerability fixed by USN-6362-2?

The severity of the vulnerability fixed by USN-6362-2 is not mentioned in the advisory.

4

Which software packages are affected by USN-6362-2?

The affected software packages are aspnetcore-runtime-6.0, aspnetcore-runtime-7.0, dotnet-host, dotnet-host-7.0, dotnet-hostfxr-6.0, dotnet-hostfxr-7.0, dotnet-runtime-6.0, dotnet-runtime-7.0, dotnet-sdk-6.0, dotnet-sdk-7.0, dotnet6, and dotnet7.

5

How do I fix the vulnerability addressed by USN-6362-2?

To fix the vulnerability, you should update the affected software packages to version 6.0.124-0ubuntu1~23.04.1 (for Ubuntu 23.04) or 7.0.113-0ubuntu1~23.04.1 (for Ubuntu 23.04).

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