ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.
Published 2016-07-05 01:59:04
Updated 2020-06-18 18:07:29
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2016-4957

Probability of exploitation activity in the next 30 days: 92.98%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 99 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-4957

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST

CWE ids for CVE-2016-4957

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-4957

Products affected by CVE-2016-4957

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