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ubuntucveUbuntu.comUB:CVE-2016-7426
HistoryJan 13, 2017 - 12:00 a.m.

CVE-2016-7426

2017-01-1300:00:00
ubuntu.com
ubuntu.com
10

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.051 Low

EPSS

Percentile

92.8%

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.

Bugs

Notes

Author Note
tyhicks “Affects ntp-4.2.5p203, up to but not including ntp-4.2.8p9, and ntp-4.3.0 up to, but not including ntp-4.3.94.”
OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11UNKNOWN
ubuntu16.04noarchntp< 1:4.2.8p4+dfsg-3ubuntu5.5UNKNOWN
ubuntu16.10noarchntp< 1:4.2.8p8+dfsg-1ubuntu2.1UNKNOWN

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.051 Low

EPSS

Percentile

92.8%