Improper Authentication Affecting ntp package, versions <1:4.2.8p8+dfsg-1
Threat Intelligence
EPSS
3.25% (92nd
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-NTP-530400
- published 5 Jul 2016
- disclosed 5 Jul 2016
Introduced: 5 Jul 2016
CVE-2016-4953 Open this link in a new tabHow to fix?
Upgrade Debian:11 ntp to version 1:4.2.8p8+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ntp package and not the ntp package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time.
References
- http://www.kb.cert.org/vuls/id/321640
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11
- https://security-tracker.debian.org/tracker/CVE-2016-4953
- https://security.gentoo.org/glsa/201607-15
- http://bugs.ntp.org/3045
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03757en_us
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
- http://support.ntp.org/bin/view/Main/NtpBug3045
- http://support.ntp.org/bin/view/Main/SecurityNotice
- 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://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.securityfocus.com/bid/91010
- http://www.securitytracker.com/id/1036037
- http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded
- http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- http://www.securityfocus.com/archive/1/archive/1/540683/100/0/threaded
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
- http://www.securityfocus.com/archive/1/538599/100/0/threaded
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd
- http://www.securityfocus.com/archive/1/538600/100/0/threaded
- https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
- http://www.securityfocus.com/archive/1/540683/100/0/threaded
- https://www.kb.cert.org/vuls/id/321640
- 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
CVSS Scores
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