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Vulnerability Details : CVE-2016-4955

ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time.
Publish Date : 2016-07-05 Last Update Date : 2021-07-16
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 362

- Products Affected By CVE-2016-4955

# Product Type Vendor Product Version Update Edition Language
1 OS Novell Suse Manager 2.1 * * * Version Details Vulnerabilities
2 Application NTP NTP * * * * Version Details Vulnerabilities
3 Application NTP NTP 4.2.8 - * * Version Details Vulnerabilities
4 Application NTP NTP 4.2.8 P3-rc2 * * Version Details Vulnerabilities
5 Application NTP NTP 4.2.8 P3 * * Version Details Vulnerabilities
6 Application NTP NTP 4.2.8 P1-beta5 * * Version Details Vulnerabilities
7 Application NTP NTP 4.2.8 P1 * * Version Details Vulnerabilities
8 Application NTP NTP 4.2.8 P3-rc1 * * Version Details Vulnerabilities
9 Application NTP NTP 4.2.8 P4 * * Version Details Vulnerabilities
10 Application NTP NTP 4.2.8 P1-rc1 * * Version Details Vulnerabilities
11 Application NTP NTP 4.2.8 P1-beta1 * * Version Details Vulnerabilities
12 Application NTP NTP 4.2.8 P2-rc3 * * Version Details Vulnerabilities
13 Application NTP NTP 4.2.8 P7 * * Version Details Vulnerabilities
14 Application NTP NTP 4.2.8 P1-rc2 * * Version Details Vulnerabilities
15 Application NTP NTP 4.2.8 P1-beta2 * * Version Details Vulnerabilities
16 Application NTP NTP 4.2.8 P2-rc2 * * Version Details Vulnerabilities
17 Application NTP NTP 4.2.8 P6 * * Version Details Vulnerabilities
18 Application NTP NTP 4.2.8 P2 * * Version Details Vulnerabilities
19 Application NTP NTP 4.2.8 P2-rc1 * * Version Details Vulnerabilities
20 Application NTP NTP 4.2.8 P1-beta3 * * Version Details Vulnerabilities
21 Application NTP NTP 4.2.8 P3-rc3 * * Version Details Vulnerabilities
22 Application NTP NTP 4.2.8 P5 * * Version Details Vulnerabilities
23 Application NTP NTP 4.2.8 P1-beta4 * * Version Details Vulnerabilities
24 OS Opensuse Leap 42.1 * * * Version Details Vulnerabilities
25 OS Opensuse Opensuse 13.2 * * * Version Details Vulnerabilities
26 OS Oracle Solaris 10 * * * Version Details Vulnerabilities
27 OS Oracle Solaris 11.3 * * * Version Details Vulnerabilities
28 OS Suse Linux Enterprise Desktop 12 SP1 * * Version Details Vulnerabilities
29 OS Suse Linux Enterprise Server 11 SP2 * * Version Details Vulnerabilities
30 OS Suse Linux Enterprise Server 11 SP3 * * Version Details Vulnerabilities
31 OS Suse Linux Enterprise Server 11 SP4 * * Version Details Vulnerabilities
32 OS Suse Linux Enterprise Server 12 SP1 * * Version Details Vulnerabilities
33 Application Suse Manager Proxy 2.1 * * * Version Details Vulnerabilities
34 Application Suse Openstack Cloud 5 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Novell Suse Manager 1
NTP NTP 22
Opensuse Leap 1
Opensuse Opensuse 1
Oracle Solaris 2
Suse Linux Enterprise Desktop 1
Suse Linux Enterprise Server 4
Suse Manager Proxy 1
Suse Openstack Cloud 1

- References For CVE-2016-4955

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
SUSE openSUSE-SU-2016:1583
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
FREEBSD FreeBSD-SA-16:24
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html
SUSE openSUSE-SU-2016:1636
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
SUSE SUSE-SU-2016:1584
http://www.securityfocus.com/bid/91007
BID 91007 NTP CVE-2016-4955 Denial of Service Vulnerability Release Date:2016-10-10
https://security.gentoo.org/glsa/201607-15
GENTOO GLSA-201607-15
http://www.securitytracker.com/id/1036037
SECTRACK 1036037
http://www.kb.cert.org/vuls/id/321640
CERT-VN VU#321640
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
SUSE SUSE-SU-2016:1563
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
SUSE SUSE-SU-2016:1602
http://support.ntp.org/bin/view/Main/SecurityNotice CONFIRM
http://bugs.ntp.org/3043 CONFIRM
http://support.ntp.org/bin/view/Main/NtpBug3043 CONFIRM

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2016-4955

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)
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