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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

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4243-1 advisory.

 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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: 1.6

Type: local

Agent: unix

Published: 1/21/2020

Updated: 8/29/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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:libbsd-dev, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libbsd0-udeb, p-cpe:/a:canonical:ubuntu_linux:libbsd0

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

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