USN-3512-1: OpenSSL vulnerabilities

11 December 2017

Several security issues were fixed in OpenSSL.

Releases

Packages

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

Details

David Benjamin discovered that OpenSSL did not correctly prevent
buggy applications that ignore handshake errors from subsequently calling
certain functions. (CVE-2017-3737)

It was discovered that OpenSSL incorrectly performed the x86_64 Montgomery
multiplication procedure. While unlikely, a remote attacker could possibly
use this issue to recover private keys. (CVE-2017-3738)

Update instructions

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

Ubuntu 17.10
Ubuntu 17.04
Ubuntu 16.04

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