NVD - CVE-2016-7426

CVE-2016-7426 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Current Description

NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.

Source: MITRE
Description Last Modified: 01/13/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.3 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L (V3 legend)
Impact Score: 1.4
Exploitability Score: 3.9

Attack Vector (AV): Network
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: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
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://rhn.redhat.com/errata/RHSA-2017-0252.html
http://support.ntp.org/bin/view/Main/NtpBug3071	Issue Tracking Mitigation Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities	Vendor Advisory
http://www.securityfocus.com/bid/94451	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://www.kb.cert.org/vuls/id/633847	Third Party Advisory US Government Resource

Technical Details

Vulnerability Type (View All)

Resource Management Errors (CWE-399)

Vulnerable software and versions Switch to CPE 2.2

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Change History

8 change records found - show changes

Initial Analysis - 1/17/2017 12:43:53 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 28026 characters. View Entire Change Record OR cpe:2.3:a:ntp:ntp:4.2.5:p203::::::* cpe:2.3:a:ntp:ntp:4.2.5:p204::::::* cpe:2.3:a:ntp:ntp:4.2.5:p205::::::* cpe:2.3:a:ntp:ntp:4.2.5:p206::::::* cpe:2.3:a:ntp:ntp:4.2.5:p207::::::* cpe:2.3:a:ntp:ntp:4.2.5:p208::::::* cpe:2.3:a:ntp:ntp:4.2.5:p209::::::* cpe:2.3:a:ntp:ntp:4.2.5:p210::::::* cpe:2.3:a:ntp:ntp:4.2.5:p211::::::* cpe:2.3:a:ntp:ntp:4.2.5:p212::::::* *cpe:2.3:a:ntp:ntp:4.2
Added	CVSS V2		(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Added	CVSS V3		AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Added	CWE		CWE-399
Changed	Reference Type	http://nwtime.org/ntp428p9_release/ No Types Assigned	http://nwtime.org/ntp428p9_release/ Release Notes, Vendor Advisory
Changed	Reference Type	http://support.ntp.org/bin/view/Main/NtpBug3071 No Types Assigned	http://support.ntp.org/bin/view/Main/NtpBug3071 Mitigation, Issue Tracking, Vendor Advisory
Changed	Reference Type	http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities No Types Assigned	http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities Vendor Advisory
Changed	Reference Type	https://www.kb.cert.org/vuls/id/633847 No Types Assigned	https://www.kb.cert.org/vuls/id/633847 Third Party Advisory, US Government Resource

Quick Info

CVE Dictionary Entry:
CVE-2016-7426
NVD Published Date:
01/13/2017
NVD Last Modified:
01/04/2018

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-7426 Detail

Current Description

Analysis Description

Impact

References to Advisories, Solutions, and Tools

Technical Details

Vulnerable software and versions Switch to CPE 2.2

Change History

CVE Modified by MITRE - 1/4/2018 9:31:15 PM

CVE Modified by MITRE - 11/20/2017 9:29:06 PM

CVE Modified by MITRE - 7/27/2017 9:29:05 PM

CVE Modified by MITRE - 5/9/2017 9:29:01 PM

CVE Modified by MITRE - 2/10/2017 9:59:01 PM

Modified Analysis - 1/27/2017 11:48:16 AM

CVE Modified by MITRE - 1/17/2017 9:59:10 PM

Initial Analysis - 1/17/2017 12:43:53 PM

Quick Info