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USN-2606-1: OpenSSL update

12 May 2015

OpenSSL TLSv1.2 client support has been enabled in Ubuntu 12.04 LTS.



  • openssl - Secure Socket Layer (SSL) cryptographic library and tools


For compatibility reasons, Ubuntu 12.04 LTS shipped OpenSSL with TLSv1.2
disabled when being used as a client.

This update re-enables TLSv1.2 by default now that the majority of
problematic sites have been updated to fix compatibility issues.

For problematic environments, TLSv1.2 can be disabled again by setting the
OPENSSL_NO_CLIENT_TLS1_2 environment variable before library

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

After a standard system update you need to reboot your computer to make
all the necessary changes.