UBUNTU-CVE-2020-15025

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    UBUNTU-CVE-2020-15025

    Published: 24 Jun 2020Last Modified: 4 Feb 2026
    Upstream:
    CVE-2020-15025
    Aliases:
    USN-5175-1

    Summary:

    Details: ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before 4.3.101 allows remote attackers to cause a denial of service (memory consumption) by sending packets, because memory is not freed in situations where a CMAC key is used and associated with a CMAC algorithm in the ntp.keys file.

    References: https://ubuntu.com/security/CVE-2020-15025, https://support.ntp.org/bin/view/Main/NtpBug3661, https://support.ntp.org/bin/view/Main/SecurityNotice#June_2020_ntp_4_2_8p15_NTP_Relea, https://bugs.ntp.org/show_bug.cgi?id=3661, https://bugs.gentoo.org/729458, https://ubuntu.com/security/notices/USN-5175-1, https://www.cve.org/CVERecord?id=CVE-2020-15025

    Affected packages

    Package

    Name: ntp

    Purl: pkg:deb/ubuntu/ntp@1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1

    Affected versions

    1:4.2.8p12+dfsg-3ubuntu2
    1:4.2.8p12+dfsg-3ubuntu3
    1:4.2.8p12+dfsg-3ubuntu4
    1:4.2.8p12+dfsg-3ubuntu4.20.04.1

    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-2020-15025 | CVE-DB