CVE-2018-20019

CRITICAL

LibVNC <a83439b9fbe0f03c48eb94ed05729cb016f8b72f - RCE

Title source: llm
STIX 2.1

Description

LibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple heap out-of-bound write vulnerabilities in VNC client code that can result remote code execution

References (9)

Core 9
Core References
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4383
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3877-1/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201908-05
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4547-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4587-1/
Patch, Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf

Scores

CVSS v3 9.8
EPSS 0.1680
EPSS Percentile 95.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (13)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04 (2 CPE variants)
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 18.10
debian/debian_linux 8.0
debian/debian_linux 9.0
libvnc_project/libvncserver < 0.9.12
siemens/simatic_itc1500_firmware 3.0.0.0 - 3.2.1.0
siemens/simatic_itc1500_pro_firmware 3.0.0.0 - 3.2.1.0
siemens/simatic_itc1900_firmware 3.0.0.0 - 3.2.1.0
... and 3 more
Published Dec 19, 2018
Tracked Since Feb 18, 2026