CVE-2018-20023

HIGH

LibVNC <8b06f835e259652b0ff026898014fc7297ade858 - Info Disclosure

Title source: llm
STIX 2.1

Description

LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

References (8)

Core 8
Core References
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201908-05
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/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4547-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4587-1/
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

Scores

CVSS v3 7.5
EPSS 0.0086
EPSS Percentile 75.2%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-665
Status published
Products (7)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
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
Published Dec 19, 2018
Tracked Since Feb 18, 2026