Vulnerability Details : CVE-2016-2517

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.
Published 2017-01-30 21:59:01
Updated 2017-11-21 02:29:04
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2016-2517

Probability of exploitation activity in the next 30 days: 0.48%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-2517

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
4.9
 MEDIUM AV:N/AC:H/Au:S/C:N/I:N/A:C
3.9
6.9
 NIST
5.3
 MEDIUM CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
1.6
3.6
 NIST

CWE ids for CVE-2016-2517

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-2517

Products affected by CVE-2016-2517

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