Medium severity5.3NVD Advisory· Published May 6, 2020· Updated Jun 17, 2026
CVE-2018-8956
CVE-2018-8956
Description
ntpd in ntp 4.2.8p10, 4.2.8p11, 4.2.8p12 and 4.2.8p13 allow remote attackers to prevent a broadcast client from synchronizing its clock with a broadcast NTP server via soofed mode 3 and mode 5 packets. The attacker must either be a part of the same broadcast network or control a slave in that broadcast network that can capture certain required packets on the attacker's behalf and send them to the attacker.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
26- ntpd/ntpdescription
- osv-coords23 versionspkg:rpm/opensuse/ntp&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/ntp&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/ntp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/ntp&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/ntp&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP1pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP2pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/ntp&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/ntp&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/ntp&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208
< 4.2.8p15-lp151.2.3.1+ 22 more
- (no CPE)range: < 4.2.8p15-lp151.2.3.1
- (no CPE)range: < 4.2.8p15-lp152.3.3.1
- (no CPE)range: < 4.2.8p15-7.2
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-4.10.1
- (no CPE)range: < 4.2.8p15-4.10.1
- (no CPE)range: < 4.2.8p15-64.16.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-4.10.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-4.10.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
- (no CPE)range: < 4.2.8p15-88.1
Patches
Vulnerability mechanics
References
7- www.ntp.orgnvdVendor Advisory
- arxiv.org/abs/2005.01783nvdThird Party Advisory
- nikhiltripathi.in/NTP_attack.pdfnvdThird Party Advisory
- tools.ietf.org/html/rfc5905nvdThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.htmlnvd
- security.netapp.com/advisory/ntap-20200518-0006/nvd
News mentions
0No linked articles in our index yet.