Vulnerability in Libvnc Project Libvncserver
CVE-2018-20023
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
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.025 (84.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Libvnc Project Libvncserver
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
- Libvnc — versions commit 8b06f835e259652b0ff026898014fc7297ade858
Weakness classification (CWE)
References
- ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-li… (Third Party Advisory)
- www.debian.org/security/2019/dsa-4383 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/12/msg00017.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3877-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201908-05 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/10/msg00042.html (mailing-list)
- usn.ubuntu.com/4547-1/ (vendor-advisory)
- usn.ubuntu.com/4587-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2018-20023?
- CVE-2018-20023 is a high-severity vulnerability in Libvnc Project Libvncserver, classified under Improper Initialization. CVSS score: 7.5/10. Published 2018-12-19.
- How severe is CVE-2018-20023?
- High severity. CVSS v3 base score is 7.5 out of 10.