CVE-2018-20020

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
KasperskyCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 95%
VendorProductVersion
libvnc_projectlibvncserver
𝑥
< 0.9.12
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
18.10
debiandebian_linux
8.0
debiandebian_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libvncserver
bullseye
0.9.13+dfsg-2+deb11u1
fixed
stretch
not-affected
sid
0.9.14+dfsg-1
fixed
trixie
0.9.14+dfsg-1
fixed
bookworm
0.9.14+dfsg-1
fixed
ssvnc
bullseye
1.0.29-5
fixed
stretch
not-affected
bookworm
1.0.29-6
fixed
sid
1.0.29-6.1
fixed
trixie
1.0.29-6.1
fixed
veyon
bullseye
4.5.3+repack1-1
fixed
stretch
not-affected
bookworm
4.7.5+repack1-1
fixed
sid
4.7.5+repack1-1.1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
italc
noble
dne
mantic
dne
lunar
dne
kinetic
dne
jammy
dne
impish
dne
hirsute
dne
groovy
dne
focal
dne
bionic
Fixed 1:3.0.3+dfsg1-3ubuntu0.1
released
xenial
Fixed 1:2.0.2+dfsg1-4ubuntu0.1
released
trusty
dne
libvncserver
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
not-affected
focal
not-affected
disco
not-affected
cosmic
Fixed 0.9.11+dfsg-1.1ubuntu0.1
released
bionic
Fixed 0.9.11+dfsg-1ubuntu1.1
released
xenial
Fixed 0.9.10+dfsg-3ubuntu0.16.04.3
released
trusty
Fixed 0.9.9+dfsg-1ubuntu1.4
released
ssvnc
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
not-affected
focal
not-affected
bionic
needed
xenial
Fixed 1.9.29-2+deb8u1build0.16.04.1
released
trusty
dne
tightvnc
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
groovy
ignored
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
Fixed 1.3.9-6.5+deb8u1build0.14.04.1~esm1
released
x11vnc
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
not-affected
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
not-affected
focal
not-affected
disco
not-affected
cosmic
ignored
bionic
not-affected
xenial
not-affected
trusty
not-affected
Common Weakness Enumeration
References
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-030-libvnc-heap-out-of-bound-write/
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html
https://security.gentoo.org/glsa/201908-05
https://security.gentoo.org/glsa/202006-06
https://usn.ubuntu.com/3877-1/
https://usn.ubuntu.com/4547-1/
https://usn.ubuntu.com/4547-2/
https://usn.ubuntu.com/4587-1/
https://www.debian.org/security/2019/dsa-4383
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-030-libvnc-heap-out-of-bound-write/
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html
https://security.gentoo.org/glsa/201908-05
https://security.gentoo.org/glsa/202006-06
https://usn.ubuntu.com/3877-1/
https://usn.ubuntu.com/4547-1/
https://usn.ubuntu.com/4547-2/
https://usn.ubuntu.com/4587-1/
https://www.debian.org/security/2019/dsa-4383