Ubuntu 18.10, 18.04 LTS, 16.04 LTS: USN-3899-1 Moderate OpenSSL Issues

ubuntu

February 27, 2019

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

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.

Topics Covered

security advisory update instructions ubuntu openssl network exposure

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.