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Ubuntu 16.04 LTS / 18.04 LTS : libbsd vulnerabilities (USN-4243-1)

critical Nessus Plugin ID 133144

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

It was discovered that libbsd incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 ESM. (CVE-2016-2090)

It was discovered that libbsd incorrectly handled certain strings. An attacker could possibly use this issue to access sensitive information. (CVE-2019-20367).

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 libbsd-dev, libbsd0 and / or libbsd0-udeb packages.

See Also

https://ubuntu.com/security/notices/USN-4243-1

Plugin Details

Severity: Critical

ID: 133144

File Name: ubuntu_USN-4243-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 1/21/2020

Updated: 10/21/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2016-2090

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libbsd0, p-cpe:/a:canonical:ubuntu_linux:libbsd0-udeb, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libbsd-dev

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: 1/20/2020

Vulnerability Publication Date: 1/13/2017

Reference Information

CVE: CVE-2016-2090, CVE-2019-20367

USN: 4243-1