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Vulnerability IntelligenceCVE-2016-4954

CVE-2016-4954

HIGH7.5

The process_packet function in ntp_proto

Published Jul 5, 2016

Modified 1 years ago

Details

The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.

References(36)

http://bugs.ntp.org/3044

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

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.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://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html

http://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html

http://packetstormsecurity.com/files/137322/FreeBSD-Security-Advisory-FreeBSD-SA-16-24.ntp.html

http://support.ntp.org/bin/view/Main/NtpBug3044

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

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd

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

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

http://www.securityfocus.com/archive/1/538599/100/0/threaded

http://www.securityfocus.com/archive/1/538600/100/0/threaded

http://www.securityfocus.com/archive/1/540683/100/0/threaded

http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded

http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded

http://www.securityfocus.com/archive/1/archive/1/540683/100/0/threaded

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

http://www.ubuntu.com/usn/USN-3096-1

https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

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

Ecosystems

Timeline

PublishedJul 5, 2016

ModifiedAug 6, 2024

CVE-2016-4954 | Mondoo Vulnerability Intelligence