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

medium Nessus Plugin ID 111581

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Synopsis

The remote Ubuntu host is missing a security update.

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 packages.

See Also

https://ubuntu.com/security/notices/USN-3733-1

Plugin Details

Severity: Medium

ID: 111581

File Name: ubuntu_USN-3733-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 8/7/2018

Updated: 10/20/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2017-7526

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/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:gnupg, p-cpe:/a:canonical:ubuntu_linux:gnupg-curl, p-cpe:/a:canonical:ubuntu_linux:gnupg-udeb, p-cpe:/a:canonical:ubuntu_linux:gpgv, p-cpe:/a:canonical:ubuntu_linux:gpgv-udeb, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/7/2018

Vulnerability Publication Date: 7/26/2018

Reference Information

CVE: CVE-2017-7526

USN: 3733-1