synced 4 MIN AGO
01 Record

CVE-2015-7974

NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
5.65% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 92.7% of scored records. A rank, not a probability.
NVD base score
7.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2016-01-26 19:00Z10 YR AGO
Last updated
2024-08-06 08:06Z2 YR AGO
Reserved
2015-10-23
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-287Improper AuthenticationClass
  • CWE-304Missing Critical Step in AuthenticationBase
Data version
5.1
Document digest
386d6af028b9f7f1370108ac77e770299915ec8d58583c6e7f0ffd21998cd838

05 Affected products

VendorProductVersionsPlatforms
debiandebian_linuxNot specified—
netappclustered_data_ontapNot specified—
netapponcommand_balanceNot specified—
ntpntpNot specified—
redhatenterprise_linuxNot specified—
siemenstim_4r-ieNot specified—
siemenstim_4r-ie_dnp3Not specified—
siemenstim_4r-ie_dnp3_firmwareNot specified—
siemenstim_4r-ie_firmwareNot specified—

06 References

07 Fixed in

Debian 11

  • ntp
    Fixed in 1:4.2.8p7+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • ntp
    Fixed in 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • ntp
    Fixed in 1:4.2.8p4+dfsg-3ubuntu5.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.