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Debian DLA-3263-1 : libtasn1-6 - LTS security update

critical Nessus Plugin ID 169736

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3263 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

Upgrade the libtasn1-6 packages.

For Debian 10 Buster, this problem has been fixed in version 4.13-3+deb10u1.

See Also

https://www.debian.org/lts/security/2023/dla-3263

https://security-tracker.debian.org/tracker/CVE-2021-46848

https://packages.debian.org/source/buster/libtasn1-6

Plugin Details

Severity: Critical

ID: 169736

File Name: debian_DLA-3263.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/10/2023

Updated: 9/11/2023

Supported Sensors: 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: p-cpe:/a:debian:debian_linux:libtasn1-6, p-cpe:/a:debian:debian_linux:libtasn1-6-dev, p-cpe:/a:debian:debian_linux:libtasn1-bin, p-cpe:/a:debian:debian_linux:libtasn1-doc, cpe:/o:debian:debian_linux:10.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/9/2023

Vulnerability Publication Date: 10/24/2022

Reference Information

CVE: CVE-2021-46848