Warning

title	Change Overview

Gateway device of UBS FX FIX API connection in Production environment will undergo a firmware upgrade.

In addition to the implementation of some bug-fixes, this firmware upgrade will fix a security vulnerability in SSL/TLS handshake.

Change Overview from

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UBS

Below is the latest communication from the UBS

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Note

title	API Upgrade

UBS has provided a latest API spec version 1.47 as attached above. There is no specific mandatory API changes for users in relation to this upgrade.

No impact for versions using OpenSSL below version 3.0

Warning

title	OpenSSL 3.0 and above

If using Open SSL Version3.0 & above, the following Option will be need to be added to the OpenSSL Config.

Options = UnsafeLagacyRenegotiation

MarketFactory will be updating the OpenSSL config with the setting Options = UnsafeLagacyRenegotiation on all servers.