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Ubuntu 16.04 ESM : Libtasn1 vulnerability (USN-5707-1)

critical Nessus Plugin ID 166748

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-5707-1 advisory.

 - GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der. (CVE-2021-46848)

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5707-1

Plugin Details

Severity: Critical

ID: 166748

File Name: ubuntu_USN-5707-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/31/2022

Updated: 7/10/2023

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: 9.4

Temporal Score: 7.4

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

CVSS Score Source: CVE-2021-46848

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:libtasn1-3-bin, p-cpe:/a:canonical:ubuntu_linux:libtasn1-6, p-cpe:/a:canonical:ubuntu_linux:libtasn1-6-dev, p-cpe:/a:canonical:ubuntu_linux:libtasn1-bin

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: 10/31/2022

Vulnerability Publication Date: 10/24/2022

Reference Information

CVE: CVE-2021-46848

USN: 5707-1