CVE-2018-20750

LibVNC through 0.9.12 contains a heap out-of-bounds write vulnerability in libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 93%
VendorProductVersion
libvnc_projectlibvncserver
𝑥
< 0.9.12
canonicalubuntu_linux
14.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
18.10
debiandebian_linux
8.0
debiandebian_linux
9.0
siemenssimatic_itc1500_firmware
3.0.0.0 ≤
𝑥
< 3.2.1.0
siemenssimatic_itc1500_pro_firmware
3.0.0.0 ≤
𝑥
< 3.2.1.0
siemenssimatic_itc1900_firmware
3.0.0.0 ≤
𝑥
< 3.2.1.0
siemenssimatic_itc1900_pro_firmware
3.0.0.0 ≤
𝑥
< 3.2.1.0
siemenssimatic_itc2200_firmware
3.0.0.0 ≤
𝑥
< 3.2.1.0
siemenssimatic_itc2200_pro_firmware
3.0.0.0 ≤
𝑥
< 3.2.1.0
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
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
italc
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
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
x11vnc
focal
not-affected
disco
not-affected
cosmic
ignored
bionic
not-affected
xenial
not-affected
trusty
not-affected