CVE-2016-4957

high

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.

References

http://bugs.ntp.org/3046

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

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

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

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

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

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

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

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

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

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

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

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

Details

Source: MITRE

Published: 2016-07-05

Updated: 2020-06-18

Type: CWE-476

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH