High severity7.2NVD Advisory· Published Jan 6, 2017· Updated Jun 17, 2026
CVE-2016-1548
CVE-2016-1548
Description
An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
20- osv-coords15 versionspkg:rpm/opensuse/ntp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/ntp&distro=SUSE%20Manager%202.1pkg:rpm/suse/ntp&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/ntp&distro=SUSE%20OpenStack%20Cloud%205
< 4.2.8p9-1.1+ 14 more
- (no CPE)range: < 4.2.8p9-1.1
- (no CPE)range: < 4.2.8p8-46.8.1
- (no CPE)range: < 4.2.8p7-11.1
- (no CPE)range: < 4.2.8p7-44.1
- (no CPE)range: < 4.2.8p7-44.1
- (no CPE)range: < 4.2.8p7-44.1
- (no CPE)range: < 4.2.8p7-11.1
- (no CPE)range: < 4.2.8p8-46.8.1
- (no CPE)range: < 4.2.8p7-11.1
- (no CPE)range: < 4.2.8p7-11.1
- (no CPE)range: < 4.2.8p8-46.8.1
- (no CPE)range: < 4.2.8p7-11.1
- (no CPE)range: < 4.2.8p7-44.1
- (no CPE)range: < 4.2.8p7-44.1
- (no CPE)range: < 4.2.8p7-44.1
- NTP Project/NTPv5Range: 4.2.8p4
- NTPsec Project/NTPSecv5Range: aa48d001683e5b791a743ec9c575aaf7d867a2b0c
Patches
Vulnerability mechanics
References
34- www.talosintelligence.com/reports/TALOS-2016-0082/nvdExploitThird Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2016-May/183647.htmlnvd
- lists.fedoraproject.org/pipermail/package-announce/2016-May/184669.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00034.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.htmlnvd
- lists.opensuse.org/opensuse-updates/2016-05/msg00114.htmlnvd
- packetstormsecurity.com/files/136864/Slackware-Security-Advisory-ntp-Updates.htmlnvd
- rhn.redhat.com/errata/RHSA-2016-1552.htmlnvd
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160428-ntpdnvd
- www.debian.org/security/2016/dsa-3629nvd
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlnvd
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlnvd
- www.securityfocus.com/archive/1/538233/100/0/threadednvd
- www.securityfocus.com/archive/1/archive/1/538233/100/0/threadednvd
- www.securityfocus.com/bid/88264nvd
- www.securitytracker.com/id/1035705nvd
- www.ubuntu.com/usn/USN-3096-1nvd
- access.redhat.com/errata/RHSA-2016:1141nvd
- cert-portal.siemens.com/productcert/pdf/ssa-211752.pdfnvd
- cert-portal.siemens.com/productcert/pdf/ssa-497656.pdfnvd
- security.freebsd.org/advisories/FreeBSD-SA-16:16.ntp.ascnvd
- security.gentoo.org/glsa/201607-15nvd
- security.netapp.com/advisory/ntap-20171004-0002/nvd
- us-cert.cisa.gov/ics/advisories/icsa-21-103-11nvd
- us-cert.cisa.gov/ics/advisories/icsa-21-159-11nvd
- www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19nvd
- www.debian.org/security/2016/dsa-3629nvd
- www.kb.cert.org/vuls/id/718152nvd
- www.talosintelligence.com/vulnerability_reports/TALOS-2016-0082nvd
News mentions
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