Ubuntu 18.04 LTS / 19.04 : Libidn2 vulnerabilities (USN-4168-1)

critical Nessus Plugin ID 130393

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Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that Libidn2 incorrectly handled certain inputs. A attacker could possibly use this issue to impersonate domains.
(CVE-2019-12290)

It was discovered that Libidn2 incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-18224).

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 idn2 and / or libidn2-0 packages.

See Also

https://usn.ubuntu.com/4168-1/

Plugin Details

Severity: Critical

ID: 130393

File Name: ubuntu_USN-4168-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/30/2019

Updated: 1/12/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:idn2, p-cpe:/a:canonical:ubuntu_linux:libidn2-0, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.04

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/29/2019

Vulnerability Publication Date: 10/21/2019

Reference Information

CVE: CVE-2019-12290, CVE-2019-18224

USN: 4168-1