Critical severity9.8NVD Advisory· Published Aug 7, 2017· Updated Jun 17, 2026
CVE-2015-7853
CVE-2015-7853
Description
The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service (crash) via a negative input value.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
42- cpe:2.3:a:netapp:oncommand_balance:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_performance_manager:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_unified_manager:-:*:*:*:*:clustered_data_ontap:*:*
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*+ 18 more
- cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*range: >=4.2.0,<4.2.8
- cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
- (no CPE)range: <4.2.8p4, <4.3.77
- cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:data_ontap:-:*:*:*:*:7-mode:*:*
- osv-coords18 versionspkg:rpm/opensuse/ntp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg: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%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/ntp&distro=SUSE%20Manager%202.1pkg:rpm/suse/ntp&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/ntp&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012
< 4.2.8p9-1.1+ 17 more
- (no CPE)range: < 4.2.8p9-1.1
- (no CPE)range: < 4.2.8p4-5.1
- (no CPE)range: < 4.2.8p6-46.5.2
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p4-5.1
- (no CPE)range: < 4.2.8p6-46.5.2
- (no CPE)range: < 4.2.8p4-5.1
- (no CPE)range: < 4.2.8p6-46.5.2
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 3.1.12.4-8.2
- (no CPE)range: < 2.17.14.1-1.12.1
- (no CPE)range: < 3.1.12.4-8.2
- (no CPE)range: < 3.1.12.4-8.2
- (no CPE)range: < 3.1.12.4-8.2
Patches
Vulnerability mechanics
References
28- support.ntp.org/bin/view/Main/NtpBug2920nvdPatchVendor Advisory
- www.securityfocus.com/bid/77273nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1033951nvdThird Party AdvisoryVDB Entry
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party AdvisoryVDB Entry
- security.gentoo.org/glsa/201607-15nvdThird Party AdvisoryVDB Entry
- security.netapp.com/advisory/ntap-20171004-0001/nvdThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.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/2015-11/msg00093.htmlnvd
- lists.opensuse.org/opensuse-updates/2016-05/msg00114.htmlnvd
- packetstormsecurity.com/files/134082/FreeBSD-Security-Advisory-ntp-Authentication-Bypass.htmlnvd
- packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.htmlnvd
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntpnvd
- www.securityfocus.com/archive/1/536737/100/0/threadednvd
- www.securityfocus.com/archive/1/536760/100/0/threadednvd
- www.securityfocus.com/archive/1/536796/100/0/threadednvd
- www.securityfocus.com/archive/1/536833/100/0/threadednvd
- www.securityfocus.com/archive/1/archive/1/536737/100/100/threadednvd
- www.securityfocus.com/archive/1/archive/1/536760/100/100/threadednvd
- www.securityfocus.com/archive/1/archive/1/536796/100/100/threadednvd
- www.securityfocus.com/archive/1/archive/1/536833/100/100/threadednvd
- www.talosintel.com/vulnerability-reports/nvd
- www.ubuntu.com/usn/USN-2783-1nvd
- bto.bluecoat.com/security-advisory/sa103nvd
- cert-portal.siemens.com/productcert/pdf/ssa-211752.pdfnvd
- us-cert.cisa.gov/ics/advisories/icsa-21-159-11nvd
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