CVE Vulnerabilities

CVE-2020-14397

NULL Pointer Dereference

Published: Jun 17, 2020 | Modified: Mar 10, 2022
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Libvncserver Libvnc_project * 0.9.12 (including)
Red Hat Enterprise Linux 8 RedHat libvncserver-0:0.9.11-17.el8 *
Libvncserver Ubuntu bionic *
Libvncserver Ubuntu eoan *
Libvncserver Ubuntu focal *
Libvncserver Ubuntu trusty *
Libvncserver Ubuntu xenial *
Veyon Ubuntu eoan *
Veyon Ubuntu groovy *
Veyon Ubuntu hirsute *
Veyon Ubuntu impish *
Veyon Ubuntu kinetic *
Veyon Ubuntu lunar *
Veyon Ubuntu mantic *
Vino Ubuntu bionic *
Vino Ubuntu devel *
Vino Ubuntu focal *
Vino Ubuntu groovy *
Vino Ubuntu hirsute *
Vino Ubuntu impish *
Vino Ubuntu jammy *
Vino Ubuntu kinetic *
Vino Ubuntu lunar *
Vino Ubuntu mantic *
Vino Ubuntu noble *
Vino Ubuntu oracular *
Vino Ubuntu trusty *
Vino Ubuntu xenial *
X11vnc Ubuntu bionic *
X11vnc Ubuntu eoan *
X11vnc Ubuntu groovy *
X11vnc Ubuntu hirsute *
X11vnc Ubuntu impish *
X11vnc Ubuntu kinetic *
X11vnc Ubuntu lunar *
X11vnc Ubuntu mantic *
X11vnc Ubuntu trusty *
X11vnc Ubuntu xenial *

Potential Mitigations

References