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    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

    Published:Dec 19, 2018
    Last Modified:Nov 21, 2024
    EPS:Dec 19, 2018
    EPSS Score:0.01203
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Libvnc Project
    Product
    Libvncserver

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-665 Improper Initialization

    Related CVEs

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    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
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    References

    https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/
    https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
    https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
    https://security.gentoo.org/glsa/201908-05
    https://usn.ubuntu.com/3877-1/
    https://usn.ubuntu.com/4547-1/
    https://usn.ubuntu.com/4587-1/
    https://www.debian.org/security/2019/dsa-4383
    https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/
    https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
    https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
    https://security.gentoo.org/glsa/201908-05
    https://usn.ubuntu.com/3877-1/
    https://usn.ubuntu.com/4547-1/
    https://usn.ubuntu.com/4587-1/
    https://www.debian.org/security/2019/dsa-4383

    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