=========================================================================Ubuntu Security Notice USN-3899-1
February 27, 2019

openssl, openssl1.0 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

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

Software Description:
- openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

Juraj Somorovsky, Robert Merget, and Nimrod Aviram discovered that certain
applications incorrectly used OpenSSL and could be exposed to a padding
oracle attack. A remote attacker could possibly use this issue to decrypt
data.

Update instructions:

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

Ubuntu 18.10:
  libssl1.0.0                     1.0.2n-1ubuntu6.2

Ubuntu 18.04 LTS:
  libssl1.0.0                     1.0.2n-1ubuntu5.3

Ubuntu 16.04 LTS:
  libssl1.0.0                     1.0.2g-1ubuntu4.15

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

References:
  https://ubuntu.com/security/notices/USN-3899-1
  CVE-2019-1559

Package Information:
  https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu6.2
  https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.3
  https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu4.15