Debian DSA-4613-1 : libidn2 - security update

critical Nessus Plugin ID 133416

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Synopsis

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

Description

A heap-based buffer overflow vulnerability was discovered in the idn2_to_ascii_4i() function in libidn2, the GNU library for Internationalized Domain Names (IDNs), which could result in denial of service, or the execution of arbitrary code when processing a long domain string.

Solution

Upgrade the libidn2 packages.

For the stable distribution (buster), this problem has been fixed in version 2.0.5-1+deb10u1.

Plugin Details

Severity: Critical

ID: 133416

File Name: debian_DSA-4613.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/3/2020

Updated: 3/28/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2019-18224

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: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libidn2

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: 2/1/2020

Vulnerability Publication Date: 10/21/2019

Reference Information

CVE: CVE-2019-18224

DSA: 4613

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