Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : nettle vulnerability (USN-3193-1)

Medium Nessus Plugin ID 97050


The remote Ubuntu host is missing one or more security-related patches.


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

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected libnettle4 and / or libnettle6 packages.

Plugin Details

Severity: Medium

ID: 97050

File Name: ubuntu_USN-3193-1.nasl

Version: $Revision: 3.4 $

Type: local

Agent: unix

Published: 2017/02/07

Modified: 2018/01/30

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libnettle4, p-cpe:/a:canonical:ubuntu_linux:libnettle6, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:16.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/02/06

Reference Information

CVE: CVE-2016-6489

OSVDB: 142565

USN: 3193-1