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CVE-2015-1798

CVE-2015-1798

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

The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.

EPSS 2.2% · 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: < 1:4.2.6.p5+dfsg-6

    Update to 1:4.2.6.p5+dfsg-6

  • ntp Ubuntu: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
    Affected ranges
    • ECOSYSTEM: < 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3

    Update to 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3

Original sources

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