CVE-2016-2517

MediumCVSS 5.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 5.3/10CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: Jan 30, 2017
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2016

CVE-2016-25185.3The MATCH_ASSOC function in NTP before version 4.2.8p9 and 4.3.x before 4.3.92 allows remote attackers to cause an out-of-bounds reference v CVE-2016-25195.9ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data CVE-2016-25217.8Untrusted search path vulnerability in the WiresharkApplication class in ui/qt/wireshark_application.cpp in Wireshark 1.12.x before 1.12.10 CVE-2016-25225.9The dissect_ber_constrained_bitstring function in epan/dissectors/packet-ber.c in the ASN.1 BER dissector in Wireshark 2.0.x before 2.0.2 do CVE-2016-25235.9The dnp3_al_process_object function in epan/dissectors/packet-dnp.c in the DNP3 dissector in Wireshark 1.12.x before 1.12.10 and 2.0.x befor CVE-2016-25245.9epan/dissectors/packet-x509af.c in the X.509AF dissector in Wireshark 2.0.x before 2.0.2 mishandles the algorithm ID, which allows remote at CVE-2016-25255.9epan/dissectors/packet-http2.c in the HTTP/2 dissector in Wireshark 2.0.x before 2.0.2 does not limit the amount of header data, which allow CVE-2016-25265.9epan/dissectors/packet-hiqnet.c in the HiQnet dissector in Wireshark 2.0.x before 2.0.2 does not validate the data type, which allows remote CVE-2016-25275.5wiretap/nettrace_3gpp_32_423.c in the 3GPP TS 32.423 Trace file parser in Wireshark 2.0.x before 2.0.2 does not ensure that a '\0' character CVE-2016-25285.9The dissect_nhdr_extopt function in epan/dissectors/packet-lbmc.c in the LBMC dissector in Wireshark 2.0.x before 2.0.2 does not validate le CVE-2016-25295.5The iseries_check_file_type function in wiretap/iseries.c in the iSeries file parser in Wireshark 2.0.x before 2.0.2 does not consider that CVE-2016-25305.9The dissct_rsl_ipaccess_msg function in epan/dissectors/packet-rsl.c in the RSL dissector in Wireshark 1.12.x before 1.12.10 and 2.0.x befor