USN-1516-1: OpenSSL vulnerability

25 July 2012

openssl vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 LTS

Summary

OpenSSL incorrectly disabled TLS 1.1 and TLS 1.2 in certain applications.

Software Description

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

Details

It was discovered that OpenSSL incorrectly handled the SSL_OP_ALL setting. This resulted in TLS 1.1 and TLS 1.2 being inadvertently disabled for certain server and client applications.

Update instructions

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

Ubuntu 12.04 LTS
libssl1.0.0 - 1.0.1-4ubuntu5.3

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References