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9.8
CVSSv3

CVE-2018-20020

Published: 19/12/2018 Updated: 23/10/2020
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
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Vulnerability Summary

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution

Vulnerability Trend

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libvnc project libvncserver

canonical ubuntu linux 18.04

canonical ubuntu linux 14.04

debian debian linux 9.0

debian debian linux 8.0

canonical ubuntu linux 18.10

canonical ubuntu linux 16.04

Vendor Advisories

Debian CVElist Bug Report Logs: libvncserver: Multiple security vulnerabilities
Debian Bug report logs - #916941 libvncserver: Multiple security vulnerabilities Package: libvncserver; Maintainer for libvncserver is Peter Spiess-Knafl <dev@spiessknaflat>; Reported by: Markus Koschany <apo@debianorg> Date: Thu, 20 Dec 2018 18:21:01 UTC Severity: grave Tags: patch, security, upstream Found in ve ...
Ubuntu Security Notice: libvncserver vulnerabilities
Several security issues were fixed in LibVNCServer ...
Red Hat: 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 ...

References

CWE-787https://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.htmlhttps://usn.ubuntu.com/3877-1/https://www.debian.org/security/2019/dsa-4383https://security.gentoo.org/glsa/201908-05https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlhttps://lists.debian.org/debian-lts-announce/2019/11/msg00033.htmlhttps://security.gentoo.org/glsa/202006-06https://usn.ubuntu.com/4547-1/https://usn.ubuntu.com/4547-2/https://usn.ubuntu.com/4587-1/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916941https://usn.ubuntu.com/3877-1/https://nvd.nist.gov
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-4946CVE-2024-30309CVE-2024-4761CVE-2024-30051type confusionmemory leakCVE-2024-30293reflected XSSCVE-2024-3126
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