National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-7427 Detail

Current Description

The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L (V3 legend)
Impact Score: 1.4
Exploitability Score: 2.8


Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): Low

CVSS v2.0 Severity and Metrics:

Base Score: 3.3 LOW
Vector: (AV:A/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.5


Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://nwtime.org/ntp428p9_release/ Release Notes Vendor Advisory
http://support.ntp.org/bin/view/Main/NtpBug3114 Issue Tracking Mitigation Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities Vendor Advisory
http://www.securityfocus.com/bid/94447 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037354
https://bto.bluecoat.com/security-advisory/sa139
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03883en_us
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03899en_us
https://usn.ubuntu.com/3707-2/
https://www.kb.cert.org/vuls/id/633847 Third Party Advisory US Government Resource

Technical Details

Vulnerability Type (View All)

  • Uncontrolled Resource Consumption ('Resource Exhaustion') (CWE-400)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

10 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-7427
NVD Published Date:
01/13/2017
NVD Last Modified:
01/24/2019