UBUNTU-CVE-2015-3405

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    UBUNTU-CVE-2015-3405

    Published: 9 Aug 2017Last Modified: 4 Feb 2026
    Upstream:
    CVE-2015-3405
    Aliases:
    USN-2567-1

    Summary:

    Details: ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.

    References: https://ubuntu.com/security/CVE-2015-3405, http://www.openwall.com/lists/oss-security/2015/04/09/5, https://ubuntu.com/security/notices/USN-2567-1, https://www.cve.org/CVERecord?id=CVE-2015-3405

    Affected packages

    Package

    Name: ntp

    Purl: pkg:deb/ubuntu/ntp@1:4.2.6.p5+dfsg-3ubuntu2.14.04.3?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:4.2.6.p5+dfsg-3ubuntu2.14.04.3

    Affected versions

    1:4.2.6.p5+dfsg-3ubuntu2
    1:4.2.6.p5+dfsg-3ubuntu2.14.04.1
    1:4.2.6.p5+dfsg-3ubuntu2.14.04.2

    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