The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.
Published 2015-04-08 10:59:05
Updated 2023-02-12 23:15:31
Source Red Hat, Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2015-1798

0.63%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2015-1798

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
1.8
LOW AV:A/AC:H/Au:N/C:N/I:P/A:N
3.2
2.9
NIST

CWE ids for CVE-2015-1798

  • Assigned by: nvd@nist.gov (Primary)

References for CVE-2015-1798

Products affected by CVE-2015-1798

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