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Vulnerability in .NET core 3.1


vergoted
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Hi 

Just to inform that there is a vulnerability in the .NET core runtime.
This is installed for the Veeam AWS, Azure & Google plug-ins.
reference: https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-43877

updates: https://dotnet.microsoft.com/en-us/download/dotnet/3.1

Please update your Veeam servers.

 

Regards

9 comments

Iams3le
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  • Veeam Legend
  • 1381 comments
  • January 12, 2022

This vulnerability was released on Dec 14, 2021. Is there a new one? https://www.cvedetails.com/vulnerability-list/vendor_id-26/product_id-43007/Microsoft-.net-Core.html 


vergoted
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  • January 12, 2022
Iams3le wrote:

This vulnerability was released on Dec 14, 2021. Is there a new one? https://www.cvedetails.com/vulnerability-list/vendor_id-26/product_id-43007/Microsoft-.net-Core.html 

No but didn’t found it mentioned..


regnor
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  • Veeam MVP
  • 1352 comments
  • January 13, 2022

Thanks for the hint @vergoted! I haven't heard about this one before. If I get it right, you would ned local access to the backup server in order to exploit it?


marcofabbri
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  • On the path to Greatness
  • 990 comments
  • January 14, 2022

This one?
https://www.cvedetails.com/cve/CVE-2021-34485/

Has a very low score… but thanks for sharing! :)


haslund
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  • Mr. VMCE
  • 391 comments
  • January 14, 2022

Thank you for taking the time to share.


vergoted
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  • January 14, 2022
marcofabbri wrote:

This one?
https://www.cvedetails.com/cve/CVE-2021-34485/

Has a very low score… but thanks for sharing! :)

This was the CVE I mentioned.
https://www.cvedetails.com/cve/CVE-2021-43877/ 
is a bit higher CVSS Score, but still low. (4.6)


Ralf
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  • February 22, 2023

Don’t know about other companies, but here everything .NET 3.1.x related was wiped from all server and only .NET 6.x is now allowed. .NET 3.1.x is EOL since 12/22, it was a LTS release released 3 years ago. New LTS releases 6.x and 8.x are available. 

The dependency to .NET 3.1.x broke Veeam One Reporter and VB4Azure plugin. And even worse, Veeam One 12 still has the dependency to 3.1.x. 

This really leaves me wondering how this could either be missed or why it was silently be accepted be Veeam. 

 

 

 

 


Iams3le
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  • Veeam Legend
  • 1381 comments
  • February 22, 2023
Ralf wrote:

Don’t know about other companies, but here everything .NET 3.1.x related was wiped from all server and only .NET 6.x is now allowed. .NET 3.1.x is EOL since 12/22, it was a LTS release released 3 years ago. New LTS releases 6.x and 8.x are available. 

The dependency to .NET 3.1.x broke Veeam One Reporter and VB4Azure plugin. And even worse, Veeam One 12 still has the dependency to 3.1.x. 

This really leaves me wondering how this could either be missed or why it was silently be accepted be Veeam. 

 

 

 

 

I actually had this concern from my comment on this post. Kindly take a look at @marcofabbri input, that might help…

 


Ralf
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  • February 22, 2023

I know how to update to latest 3.1.x. This does not help as 3.1.x is simply EOL and considered evil.


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