CVE-2018-5733

    Dashboard / Vulnerabilities / CVE-2018-5733

    CVE-2018-5733

    Published: 16 Jan 2019Last Modified: 8 Jul 2026

    Summary:

    Details: A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0.

    References: http://www.securityfocus.com/bid/103188, http://www.securitytracker.com/id/1040437, https://access.redhat.com/errata/RHSA-2018:0469, https://access.redhat.com/errata/RHSA-2018:0483, https://kb.isc.org/docs/aa-01567, https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html, https://security.netapp.com/advisory/ntap-20250425-0010/, https://usn.ubuntu.com/3586-1/, https://usn.ubuntu.com/3586-2/, https://www.debian.org/security/2018/dsa-4133

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 079f747eb20d40e80c65e8a984d6c50860560b3c
    Fixed -None

    Affected versions

    4.1-esv-NA

    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
    CVE-2018-5733 | CVE-DB