[RFC5746] issue with ssl decryption: openssl3.0 unsafe legacy renegotiation disabled

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[RFC5746] issue with ssl decryption: openssl3.0 unsafe legacy renegotiation disabled

L0 Member

Since I upgraded to the lastest fedora, all of my python/ansible script failed when they are decrypted by our palo alto ssl outbound policy.


After some diging, fedora 35 was using openssl 1.1.1 and fedora 36 switched to openssl 3.0: https://fedoraproject.org/wiki/Changes/OpenSSL3.0


On the openssl 3.0 changelog, we can find this:

OPENSSL changelog between 1.1.1 and 3.0.0 [7 sep 2021] contains:

* Support for RFC 5746 secure renegotiation is now required by default for SSL or TLS connections to succeed.


I found a post on a stackoverflow that explain how to reenable unsecure renegociation to have a quick fix. This won't be a good solution when all our devs will be using linux and dockers with openssl 3.0 installed.


Is there a way to configure ssl decryption on the palo alto to enable secure renegociation ?



L0 Member

This will be supported natively in the following versions:


11.0.2 - ETA July 2023
10.2.5 - ETA  August 2023
10.1.11 - ETA - September 2023
9.1.17 - ETA October 2023

L0 Member

Looks like it's there now:

10.2.5 and 10.1.10


Fixed an issue where TLS clients, such as those using OpenSSL 3.0, enforced the TLS renegotiation extension (RFC 5746).
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