CVE-2018-20020 Information

Description

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

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://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.html https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html https://security.gentoo.org/glsa/201908-05 https://security.gentoo.org/glsa/202006-06 https://usn.ubuntu.com/3877-1/ https://usn.ubuntu.com/4547-1/ https://usn.ubuntu.com/4547-2/ https://usn.ubuntu.com/4587-1/ https://www.debian.org/security/2019/dsa-4383

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8