USN-2883-1: OpenSSL vulnerability

Ubuntu Security Notice USN-2883-1

28th January, 2016

openssl vulnerability

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

• Ubuntu 15.10

Summary

OpenSSL could be made to expose sensitive information over the network.

Software description

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

Details

Antonio Sanso discovered that OpenSSL reused the same private DH exponent
for the life of a server process when configured with a X9.42 style
parameter file. This could allow a remote attacker to possibly discover the
server's private DH exponent when being used with non-safe primes.

Update instructions

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

Ubuntu 15.10:

libssl1.0.0 1.0.2d-0ubuntu1.3

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

CVE-2016-0701