USN-2883-1: OpenSSL vulnerability

28 January 2016

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



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


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 versions:

Ubuntu 15.10

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