The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3349-1 advisory.

    Yihan Lian discovered that NTP incorrectly handled certain large request data values. A remote attacker     could possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only     affected Ubuntu 16.04 LTS. (CVE-2016-2519)

    Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed addresses when performing rate     limiting. A remote attacker could possibly use this issue to perform a denial of service. This issue only     affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7426)

    Matthew Van Gundy discovered that NTP incorrectly handled certain crafted broadcast mode packets. A remote     attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu     14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. (CVE-2016-7427, CVE-2016-7428)

    Miroslav Lichvar discovered that NTP incorrectly handled certain responses. A remote attacker could     possibly use this issue to perform a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu     16.04 LTS, and Ubuntu 16.10. (CVE-2016-7429)

    Sharon Goldberg and Aanchal Malhotra discovered that NTP incorrectly handled origin timestamps of zero. A     remote attacker could possibly use this issue to bypass the origin timestamp protection mechanism. This     issue only affected Ubuntu 16.10. (CVE-2016-7431)

    Brian Utterback, Sharon Goldberg and Aanchal Malhotra discovered that NTP incorrectly performed initial     sync calculations. This issue only applied to Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7433)

    Magnus Stubman discovered that NTP incorrectly handled certain mrulist queries. A remote attacker could     possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only affected     Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7434)

    Matthew Van Gund discovered that NTP incorrectly handled origin timestamp checks. A remote attacker could     possibly use this issue to perform a denial of service. This issue only affected Ubuntu Ubuntu 16.10, and     Ubuntu 17.04. (CVE-2016-9042)

    Matthew Van Gundy discovered that NTP incorrectly handled certain control mode packets. A remote attacker     could use this issue to set or unset traps. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS     and Ubuntu 16.10. (CVE-2016-9310)

    Matthew Van Gundy discovered that NTP incorrectly handled the trap service. A remote attacker could     possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only applied     to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9311)

    It was discovered that NTP incorrectly handled memory when processing long variables. A remote     authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service.
    (CVE-2017-6458)

    It was discovered that NTP incorrectly handled memory when processing long variables. A remote     authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service.
    This issue only applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-6460)

    It was discovered that the NTP legacy DPTS refclock driver incorrectly handled the /dev/datum device. A     local attacker could possibly use this issue to cause a denial of service. (CVE-2017-6462)

    It was discovered that NTP incorrectly handled certain invalid settings in a :config directive. A remote     authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service.
    (CVE-2017-6463)

    It was discovered that NTP incorrectly handled certain invalid mode configuration directives. A remote     authenticated user could possibly use this issue to cause NTP to crash, resulting in a denial of service.
    (CVE-2017-6464)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 14.04 LTS / 16.04 LTS : NTP vulnerabilities (USN-3349-1)

high Nessus Plugin ID 101263

Version 3.11