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CVE-2020-25708

Published: 13 November 2020

A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service.

Notes

AuthorNote
leosilva
vino ships libvncserver source in server/libvncserver
Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
italc
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist
(trusty was needs-triage)
upstream Needs triage

xenial Ignored
(end of standard support, was needs-triage)
libvncserver
Launchpad, Ubuntu, Debian
bionic
Released (0.9.11+dfsg-1ubuntu1.4)
focal
Released (0.9.12+dfsg-9ubuntu0.3)
groovy Not vulnerable

hirsute Not vulnerable

impish Not vulnerable

jammy Not vulnerable

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (0.9.10+dfsg-3ubuntu0.16.04.6)
Patches:
upstream: https://github.com/LibVNC/libvncserver/commit/673c07a75ed844d74676f3ccdcfdc706a7052dba
tightvnc
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

precise Does not exist

trusty Does not exist
(trusty was needs-triage)
upstream Needs triage

xenial Ignored
(end of standard support, was needs-triage)
veyon
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

vino
Launchpad, Ubuntu, Debian
bionic
Released (3.22.0-3ubuntu1.2)
focal
Released (3.22.0-5ubuntu2.2)
groovy
Released (3.22.0-6ubuntu2.1)
hirsute
Released (3.22.0-6ubuntu3)
impish
Released (3.22.0-6ubuntu3)
jammy
Released (3.22.0-6ubuntu3)
precise Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (3.8.1-0ubuntu9.4)
x11vnc
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

precise Does not exist

trusty Needs triage

upstream Needs triage

xenial Ignored
(end of standard support, was needs-triage)