libcrypto.so coming with Matlab Runtime breaks SSL for self signed certificates

I am using Matlab Compiler SDK to compile some Matlab code to .net DLL that I use as a dependency in a dotnet code 5 project.

The project is running inside a AWS Docker image for writing Lambda in dotnet 5.

In general everything works and as you can see the documentation points out that setting the env var LD_LIBRARY_PATH is key for this functionality.

What breaks is that I can't anymore make request to https end points with self signed certificates (all AWS services DynamoDB, S3, etc...). The problem disappears as I take out the LD_LIBRARY_PATH with Matlab libraries, but of course when I do that Matlab binaries don't work anymore.

I have been reading articles like this one, yet I didn't manage to fix this SSL issue, that of course I can bypass but I don't intend to.

.net exception

The SSL connection could not be established, see inner exception. The remote certificate is invalid according to the validation procedure.

INNER EXCEPTION: The remote certificate is invalid because of errors in > the certificate chain: PartialChain

I found out that the specific libraries that is causing this exception are:

• /opt/mcr/v99/bin/glnxa64/libssl.so.1.1
• /opt/mcr/v99/bin/glnxa64/libssl.so.1
• /opt/mcr/v99/bin/glnxa64/libcrypto.so.1.1
• /opt/mcr/v99/bin/glnxa64/libcrypto.so.1

They are provided by Matlab and added to LD_LIBRARY_PATH.

I have tried to remove those and link the system one and in this way I fix the SSL issue, but I break Matlab execution.

Useful articles

• https://it.mathworks.com/support/search.html/answers/513449-what-unable-to-launch-the-matlabwindow-application-during-installation.html?fq=asset_type_name:answer%20category:support/introduct1740&page=1
• https://www.bswen.com/2018/11/others-Openssl-version-cause-error-when-loading-shared-libraries-libssl.so.1.1.html

[Giacomo Rebonato]

Posted here too: .net - SSL broken with LD_LIBRARY_PATH and Matlab - Stack Overflow

Could you provide me a contact for technical support?

This issue is affecting badly our business.

[Giacomo Rebonato]

Sharing a repo where the issue can be reproduced in Docker: https://stackoverflow.com/questions/65961176/ssl-broken-with-ld-library-path-and-matlab

I'd really appreciate support.

[Giacomo Rebonato]

Ticket: 04717330

[Kautuk Raj]

A solution to the question is posted by the OP here: .net - SSL broken with LD_LIBRARY_PATH and Matlab - Stack Overflow