Medium severity5.3NVD Advisory· Published Jan 30, 2017· Updated May 13, 2026
CVE-2016-2517
CVE-2016-2517
Description
NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (prevent subsequent authentication) by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey, controlkey, or requestkey. NOTE: this vulnerability exists because of a CVE-2016-2516 regression.
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- support.ntp.org/bin/view/Main/NtpBug3010nvdVendor Advisory
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlnvdThird Party Advisory
- www.securityfocus.com/bid/88189nvdThird Party AdvisoryVDB Entry
- www.kb.cert.org/vuls/id/718152nvdThird Party AdvisoryUS Government Resource
- www.securitytracker.com/id/1035705nvd
- security.freebsd.org/advisories/FreeBSD-SA-16:16.ntp.ascnvd
- security.gentoo.org/glsa/201607-15nvd
- security.netapp.com/advisory/ntap-20171004-0002/nvd
News mentions
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