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How To Fix CVE-2016-2107 on Ubuntu 14.04?

Posted on July 19, 2016

Let's Encrypt

Hello Digital Ocean Community -

For reference my setup is Ubuntu 14.04 with nginx

I need your help! I followed this guide (https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-14-04) to set up KingsKidsClub.com and SacramentoKingsKidsClub.com.

Installation went well except for testing the security on ssllabs at the end of step 3. See: https://www.ssllabs.com/ssltest/analyze.html?d=kingskidsclub.com https://www.ssllabs.com/ssltest/analyze.html?d=sacramentokingskidsclub.com

I failed both tests, apparently I have a vulnerability called: “CVE-2016-2107”

So far I’ve tried the following without luck:

https://bobcares.com/blog/fix-high-severity-openssl-bugs-memory-corruption-padding-oracle-ubuntu-centos-redhat-opensuse-linux/

https://gist.github.com/ArturT/bc8836d3bedff801dc324ac959050d12

Anyone know how I can fix this issue? Thank you in advance for any help!

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dpritchett

August 5, 2016

This comment has been deleted

visitor

August 14, 2016

you can also check your fix here: https://filippo.io/CVE-2016-2107

Kamal Nasser

July 19, 2016

Hi!

The Ubuntu package maintainers have already pushed patched packages that should fix the vulnerability. Run the following command to upgrade the OpenSSL libraries on your system which Nginx uses:

sudo apt-get install --only-upgrade libssl1.0.0 openssl

You will need to restart Nginx in order for the changes to take effect:

sudo service nginx restart

Per the bobcares article that you linked, you can make sure that you got the right packages by checking if the vulnerability is mentioned in the changelog:

zgrep -ie "(CVE-2016-2108|CVE-2016-2107)" /usr/share/doc/libssl1.0.0/changelog.Debian.gz

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