Ubuntu Security Notice USN-3193-1
6th February, 2017
A security issue affects these releases of Ubuntu and its
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Nettle could be made to expose sensitive information over the network.
– low level cryptographic library (public-key cryptos)
It was discovered that Nettle incorrectly mitigated certain timing
side-channel attacks. A remote attacker could possibly use this flaw to
recover private keys.
The problem can be corrected by updating your system to the following
- Ubuntu 16.10:
- Ubuntu 16.04 LTS:
- Ubuntu 14.04 LTS:
- Ubuntu 12.04 LTS:
To update your system, please follow these instructions:
In general, a standard system update will make all the necessary changes.