CVE-2018-20020

    Dashboard / Vulnerabilities / CVE-2018-20020

    CVE-2018-20020

    Published: 19 Dec 2018Last Modified: 7 Aug 2026

    Summary:

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

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

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -0a70095271d845d16a3ed17354841b01f33963ad

    Affected versions

    LibVNCServer-0.9.11
    LibVNCServer-0.9.10
    LibVNCServer-0.9.9
    LibVNCServer-0.9.8

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High