Ubuntu 14.04 LTS / 16.04 LTS : gnupg vulnerability (USN-3733-1)

Medium Nessus Plugin ID 111581

Synopsis

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

Description

Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that GnuPG is vulnerable to a cache side-channel attack. A local attacker could use this attack to recover RSA 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.

Solution

Update the affected gnupg, gnupg-curl and / or gpgv packages.

Plugin Details

Severity: Medium

ID: 111581

File Name: ubuntu_USN-3733-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/08/07

Modified: 2018/10/03

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.3

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

CVSSv3

Base Score: 6.8

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:gnupg, p-cpe:/a:canonical:ubuntu_linux:gnupg-curl, p-cpe:/a:canonical:ubuntu_linux:gpgv, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04

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

Patch Publication Date: 2018/08/07

Reference Information

CVE: CVE-2017-7526

USN: 3733-1