CVE-2016-4957

7.5 HIGH

Published: July 05, 2016 Modified: May 06, 2026

Description

ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://bugs.ntp.org/3046

Source: cve@mitre.org

Issue Tracking Vendor Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html

Source: cve@mitre.org

Mailing List Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html

Source: cve@mitre.org

Mailing List Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html

Source: cve@mitre.org

Mailing List Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html

Source: cve@mitre.org

Mailing List Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html

Source: cve@mitre.org

Mailing List Third Party Advisory

http://support.ntp.org/bin/view/Main/NtpBug3046

Source: cve@mitre.org

Patch Vendor Advisory

http://support.ntp.org/bin/view/Main/SecurityNotice

Source: cve@mitre.org

Release Notes Vendor Advisory

http://www.kb.cert.org/vuls/id/321640

Source: cve@mitre.org

Third Party Advisory US Government Resource

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

Source: cve@mitre.org

Third Party Advisory

http://www.securitytracker.com/id/1036037

Source: cve@mitre.org

Third Party Advisory VDB Entry

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc

Source: cve@mitre.org

Third Party Advisory

https://security.gentoo.org/glsa/201607-15

Source: cve@mitre.org

Third Party Advisory

http://bugs.ntp.org/3046