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CVE-2018-20024

Published: 19 December 2018

LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null pointer dereference in VNC client code that can result DoS.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
italc
Launchpad, Ubuntu, Debian
bionic
Released (1:3.0.3+dfsg1-3ubuntu0.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

lunar Does not exist

mantic Does not exist

noble Does not exist

trusty Does not exist
(trusty was needed)
upstream
Released (1:3.0.3+dfsg1-1+deb9u1, 1:2.0.2+dfsg1-2+deb8u1)
xenial
Released (1:2.0.2+dfsg1-4ubuntu0.1)
libvncserver
Launchpad, Ubuntu, Debian
bionic
Released (0.9.11+dfsg-1ubuntu1.1)
cosmic
Released (0.9.11+dfsg-1.1ubuntu0.1)
disco Not vulnerable
(0.9.11+dfsg-1.2)
focal Not vulnerable
(0.9.11+dfsg-1.2)
groovy Not vulnerable
(0.9.11+dfsg-1.2)
hirsute Not vulnerable
(0.9.11+dfsg-1.2)
impish Not vulnerable
(0.9.11+dfsg-1.2)
jammy Not vulnerable
(0.9.11+dfsg-1.2)
kinetic Not vulnerable
(0.9.11+dfsg-1.2)
lunar Not vulnerable
(0.9.11+dfsg-1.2)
mantic Not vulnerable
(0.9.11+dfsg-1.2)
noble Not vulnerable
(0.9.11+dfsg-1.2)
trusty
Released (0.9.9+dfsg-1ubuntu1.4)
upstream
Released (0.9.11+dfsg-1.2)
xenial
Released (0.9.10+dfsg-3ubuntu0.16.04.3)
Patches:
upstream: https://github.com/LibVNC/libvncserver/commit/4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7
ssvnc
Launchpad, Ubuntu, Debian
bionic Needed

focal Not vulnerable
(1.0.29-5)
groovy Not vulnerable
(1.0.29-5)
hirsute Not vulnerable
(1.0.29-5)
impish Not vulnerable
(1.0.29-5)
jammy Not vulnerable
(1.0.29-5)
kinetic Not vulnerable
(1.0.29-5)
lunar Not vulnerable
(1.0.29-5)
mantic Not vulnerable
(1.0.29-5)
noble Not vulnerable
(1.0.29-5)
trusty Does not exist
(trusty was needed)
upstream
Released (1.0.29-2+deb8u1, 1.0.29-3+deb9u1, 1.0.29-4+deb10u1, 1.0.29-5)
xenial
Released (1.9.29-2+deb8u1build0.16.04.1)
x11vnc
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(uses shared libvnc)
cosmic Ignored
(end of life)
disco Not vulnerable
(uses shared libvnc)
focal Not vulnerable
(uses shared libvnc)
groovy Not vulnerable
(uses shared libvnc)
hirsute Not vulnerable
(uses shared libvnc)
impish Not vulnerable
(uses shared libvnc)
jammy Not vulnerable
(uses shared libvnc)
kinetic Not vulnerable
(uses shared libvnc)
lunar Not vulnerable
(uses shared libvnc)
mantic Not vulnerable
(uses shared libvnc)
noble Not vulnerable
(uses shared libvnc)
trusty Not vulnerable
(uses shared libvnc)
upstream Needs triage

xenial Not vulnerable
(uses shared libvnc)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H