USN-3417-1: Libgcrypt vulnerability
14 September 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
Libgcrypt could be made to expose sensitive information.
- libgcrypt20 - LGPL Crypto library
Daniel Genkin, Luke Valenta, and Yuval Yarom discovered that Libgcrypt was susceptible to an attack via side channels. A local attacker could use this attack to recover Curve25519 private keys.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.