CVE-2016-2517

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General

Score:4.9/10.0
Severity:Low
Category:Input Validation Error

Impact Metrics

Confidentiality:None
Integrity:None
Availability:Complete

Exploitability Metrics

Access Vector:Network
Access Complexity:High
Authentication:Single

Relative vulnerabilities

CVE-2015-1798, CVE-2015-1799, CVE-2015-5194, CVE-2015-5300, CVE-2015-7691, CVE-2015-7692, CVE-2015-7701, CVE-2015-7702, CVE-2015-7703, CVE-2015-7704, CVE-2015-7705, CVE-2015-7848, CVE-2015-7849, CVE-2015-7850, CVE-2015-7851, CVE-2015-7852, CVE-2015-7853, CVE-2015-7854, CVE-2015-7855, CVE-2015-7871, CVE-2015-7973, CVE-2015-7974, CVE-2015-7975, CVE-2015-7976, CVE-2015-7977, CVE-2015-7978, CVE-2015-7979, CVE-2015-8138, CVE-2015-8158, CVE-2016-1547, CVE-2016-1548, CVE-2016-1549, CVE-2016-1550, CVE-2016-1551, CVE-2016-2516, CVE-2016-2518, CVE-2016-2519, CVE-2016-4953, CVE-2016-4954, CVE-2016-4955, CVE-2016-4956, CVE-2016-4957

Published on 30/01/17 - Updated on 21/11/17

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.

Category: Input Validation Error

CWE-20 (Input Validation)
The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program.

Security Notices

US National Vulnerability DatabaseCVE-2016-2517
Agence Nationale de la Sécurité des Systèmes d'Information CERTFR-2016-AVI-153, CERTFR-2017-AVI-365
Renater 2016/VULN183
SUSE SUSE-SU-2016:1278, SUSE-SU-2016:1291, SUSE-SU-2016:1471, SUSE-SU-2016:1568, SUSE-SU-2016:1912

Exploits

No exploits available for this CVE in our database.

Relative technologies

VendorProduct
ntpntp

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