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CVE-2019-1559: ssllabs scan returns different results scanning the same server

Question asked by Robin W on Jun 6, 2019
Latest reply on Jun 7, 2019 by theone2018

Can somebody explain me how the CVE-2019-1559 vulnerability check is performed? We have automated ssl scans running daily and sometimes we've got "B" grade and sometimes "F" due to CVE-2019-1559. The servers are using openssl 1.0.1 so they shouldn't be affected by CVE-2019-1559.

 

SSL Server Test: ultra-au-prod-turn03.bbcollab.cloud (Powered by Qualys SSL Labs) 

 

Here the the test results for the same server from the same day:

Thank you in advance.

RobinW.

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