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CVE-2020-13817

CVE-2020-13817

This page contains facts from public vulnerability sources. Check the original advisory before updating.

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.

CVSS 7.4 · High · EPSS 3.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • ntp Debian:11

    Affected ranges
    • ECOSYSTEM: < 1:4.2.8p14+dfsg-1

    Update to 1:4.2.8p14+dfsg-1

  • ntp Ubuntu:Pro:14.04:LTS

    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
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.6
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.7
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.8
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.12
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13
    • 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:16.04:LTS

    Versions
    • 1:4.2.6.p5+dfsg-3ubuntu8
    • 1:4.2.6.p5+dfsg-3ubuntu8.1
    • 1:4.2.6.p5+dfsg-3ubuntu9
    • 1:4.2.8p4+dfsg-3ubuntu1
    • 1:4.2.8p4+dfsg-3ubuntu2
    • 1:4.2.8p4+dfsg-3ubuntu3
    • 1:4.2.8p4+dfsg-3ubuntu4
    • 1:4.2.8p4+dfsg-3ubuntu5
    • 1:4.2.8p4+dfsg-3ubuntu5.1
    • 1:4.2.8p4+dfsg-3ubuntu5.2
    • 1:4.2.8p4+dfsg-3ubuntu5.3
    • 1:4.2.8p4+dfsg-3ubuntu5.4
    • 1:4.2.8p4+dfsg-3ubuntu5.5
    • 1:4.2.8p4+dfsg-3ubuntu5.6
    • 1:4.2.8p4+dfsg-3ubuntu5.7
    • 1:4.2.8p4+dfsg-3ubuntu5.8
    • 1:4.2.8p4+dfsg-3ubuntu5.9
    • 1:4.2.8p4+dfsg-3ubuntu5.10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:Pro:18.04:LTS

    Versions
    • 1:4.2.8p10+dfsg-5ubuntu3
    • 1:4.2.8p10+dfsg-5ubuntu4
    • 1:4.2.8p10+dfsg-5ubuntu5
    • 1:4.2.8p10+dfsg-5ubuntu6
    • 1:4.2.8p10+dfsg-5ubuntu7
    • 1:4.2.8p10+dfsg-5ubuntu7.1
    • 1:4.2.8p10+dfsg-5ubuntu7.1+esm1
    • 1:4.2.8p10+dfsg-5ubuntu7.1+esm2
    • 1:4.2.8p10+dfsg-5ubuntu7.2
    • 1:4.2.8p10+dfsg-5ubuntu7.2+esm1
    • 1:4.2.8p10+dfsg-5ubuntu7.3
    • 1:4.2.8p10+dfsg-5ubuntu7.3+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:Pro:20.04:LTS

    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
    • 1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ntp Ubuntu:22.04:LTS

    Versions
    • 1:4.2.8p12+dfsg-3ubuntu6
    • 1:4.2.8p15+dfsg-1ubuntu1
    • 1:4.2.8p15+dfsg-1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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