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Linux Distros Unpatched Vulnerability : CVE-2020-14404

medium Nessus Plugin ID 223212

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rre.c allows out-of-bounds access via encodings. (CVE-2020-14404)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2020-14404

https://ubuntu.com/security/CVE-2020-14404

Plugin Details

Severity: Medium

ID: 223212

File Name: unpatched_CVE_2020_14404.nasl

Version: 1.3

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/2/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2020-14404

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:centos:centos:7, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:canonical:ubuntu_linux:veyon, p-cpe:/a:centos:centos:libvncserver, p-cpe:/a:redhat:enterprise_linux:libvncserver, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:vino, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:x11vnc, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:vino

Required KB Items: Host/OS/identifier, Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/17/2020

Reference Information

CVE: CVE-2020-14404