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USN-3193-1: Nettle vulnerability

6 February 2017

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



  • nettle - 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.

Update instructions

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

Ubuntu 16.10
Ubuntu 16.04
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.