USN-3193-1: Nettle vulnerability

Ubuntu Security Notice USN-3193-1

6th February, 2017

nettle vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

• Ubuntu 16.10



• Ubuntu 16.04 LTS



• Ubuntu 14.04 LTS



• Ubuntu 12.04 LTS

Summary

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

Software description

• nettle
  - low level cryptographic library (public-key cryptos)
  
  

Details

It was discovered that Nettle incorrectly mitigated certain timing
side-channel attacks. A remote attacker could possibly use this flaw to
recover private keys.

Update instructions

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

Ubuntu 16.10:

Ubuntu 16.04 LTS:

Ubuntu 14.04 LTS:

Ubuntu 12.04 LTS:

To update your system, please follow these instructions: