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Ubuntu 14.04 LTS / 16.04 LTS : GnuPG 2 vulnerability (USN-3675-2)

high Nessus Plugin ID 110549

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Synopsis

The remote Ubuntu host is missing a security update.

Description

USN-3675-1 fixed a vulnerability in GnuPG 2 for Ubuntu 18.04 LTS and Ubuntu 17.10. This update provides the corresponding update for GnuPG 2 in Ubuntu 16.04 LTS and Ubuntu 14.04 LTS.

Marcus Brinkmann discovered that during decryption or verification, GnuPG did not properly filter out terminal sequences when reporting the original filename. An attacker could use this to specially craft a file that would cause an application parsing GnuPG output to incorrectly interpret the status of the cryptographic operation reported by GnuPG.

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-3675-2

Plugin Details

Severity: High

ID: 110549

File Name: ubuntu_USN-3675-2.nasl

Version: 1.12

Type: local

Agent: unix

Published: 6/15/2018

Updated: 10/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2018-12020

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:gnupg2, p-cpe:/a:canonical:ubuntu_linux:gpgsm, p-cpe:/a:canonical:ubuntu_linux:gpgv-udeb, p-cpe:/a:canonical:ubuntu_linux:gpgv2, p-cpe:/a:canonical:ubuntu_linux:scdaemon, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:dirmngr, p-cpe:/a:canonical:ubuntu_linux:gnupg-agent

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/15/2018

Vulnerability Publication Date: 6/8/2018

Reference Information

CVE: CVE-2018-12020

IAVA: 2018-A-0193

USN: 3675-2