CVE-2016-1550

MEDIUM

ntp 4.2.8p4 and NTPSec a5fb34b - Exposure of Sensitive Information via Message Authentication

Title source: llm

Description

An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key.

References (34)

Core 34

Core References

Vendor Advisory vendor-advisory x_refsource_ubuntu

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

Vendor Advisory x_refsource_confirm

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

Vendor Advisory vendor-advisory x_refsource_redhat

https://access.redhat.com/errata/RHSA-2016:1141

Third Party Advisory, US Government Resource third-party-advisory x_refsource_cert-vn

https://www.kb.cert.org/vuls/id/718152

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-1552.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1035705

Vendor Advisory x_refsource_confirm

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

Technical Description, Third Party Advisory x_refsource_misc

http://www.talosintelligence.com/reports/TALOS-2016-0084/

Various Sources vendor-advisory x_refsource_cisco

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpd

Various Sources vendor-advisory x_refsource_freebsd

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

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/88261

Exploit, Third Party Advisory x_refsource_misc

http://packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184669.html

Third Party Advisory x_refsource_misc

https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0084

Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/538233/100/0/threaded

Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/archive/1/538233/100/0/threaded

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183647.html

Vendor Advisory x_refsource_confirm

https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf

Third Party Advisory, US Government Resource x_refsource_misc

https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11

Vendor Advisory x_refsource_confirm

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

Third Party Advisory, US Government Resource x_refsource_misc

https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11

Various Sources x_refsource_misc

https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19

Vendor Advisory x_refsource_confirm

https://security.netapp.com/advisory/ntap-20171004-0002/

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2016/dsa-3629

Third Party Advisory vendor-advisory x_refsource_debian

https://www.debian.org/security/2016/dsa-3629

Third Party Advisory vendor-advisory x_refsource_gentoo

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

Mailing List vendor-advisory x_refsource_suse

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

Mailing List vendor-advisory x_refsource_suse

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

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html

Mailing List vendor-advisory x_refsource_suse

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

Scores

CVSS v3 5.3

EPSS 0.0363

EPSS Percentile 88.2%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Details

CWE

CWE-200

Status published

Products (4)

ntp/ntp 4.2.8 p4

NTP Project/NTP 4.2.8p3

NTP Project/NTP 4.2.8p4

NTPsec Project/NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92

Published Jan 06, 2017

Tracked Since Feb 18, 2026