Ubuntu 17.04 : libidn2-0 vulnerability (USN-3421-1)

High Nessus Plugin ID 103325


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


It was discovered that Libidn2 incorrectly handled certain input. A remote attacker could possibly use this issue to cause Libidn2 to crash, resulting in a denial of service.

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.


Update the affected idn2 and / or libidn2-0 packages.

Plugin Details

Severity: High

ID: 103325

File Name: ubuntu_USN-3421-1.nasl

Version: $Revision: 3.3 $

Type: local

Agent: unix

Published: 2017/09/19

Modified: 2018/01/30

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


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: CVSS:3.0/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:17.04

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/09/18

Reference Information

CVE: CVE-2017-14062

OSVDB: 164454

USN: 3421-1