UBUNTU-CVE-2019-5747

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    UBUNTU-CVE-2019-5747

    Published: 9 Jan 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-5747
    Aliases:
    USN-3935-1

    Summary:

    Details: An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP client, server, and/or relay) might allow a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to assurance of a 4-byte length when decoding DHCP_SUBNET. NOTE: this issue exists because of an incomplete fix for CVE-2018-20679.

    References: https://ubuntu.com/security/CVE-2019-5747, https://ubuntu.com/security/notices/USN-3935-1, https://www.cve.org/CVERecord?id=CVE-2019-5747

    Affected packages

    Package

    Name: busybox

    Purl: pkg:deb/ubuntu/busybox@1:1.21.0-1ubuntu1.4?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:1.21.0-1ubuntu1.4

    Affected versions

    1:1.20.0-8.1ubuntu1
    1:1.20.0-9ubuntu1
    1:1.20.0-9ubuntu2

    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
    UBUNTU-CVE-2019-5747 | CVE-DB