USN-4547-2

    Dashboard / Vulnerabilities / USN-4547-2

    USN-4547-2

    Published: 28 Sept 2020Last Modified: 27 Apr 2026

    Summary: ssvnc vulnerabilities

    Details: It was discovered that the LibVNCClient vendored in SSVNC incorrectly handled certain packet lengths. A remote attacker could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code. (CVE-2018-20020, CVE-2018-20021, CVE-2018-20022, CVE-2018-2024)

    References: https://ubuntu.com/security/notices/USN-4547-2, https://ubuntu.com/security/CVE-2018-20020, https://ubuntu.com/security/CVE-2018-20021, https://ubuntu.com/security/CVE-2018-20022, https://ubuntu.com/security/CVE-2018-20024

    Affected packages

    Package

    Name: ssvnc

    Purl: pkg:deb/ubuntu/[email protected]+deb8u1build0.16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.0.29-2+deb8u1build0.16.04.1

    Affected versions

    1.0.29-2build1

    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