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redhatRedHatRHSA-2016:0063
HistoryJan 25, 2016 - 12:00 a.m.

(RHSA-2016:0063) Important: ntp security update

2016-01-2500:00:00
access.redhat.com
74

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

68.5%

JSON

The Network Time Protocol (NTP) is used to synchronize a computer’s time
with a referenced time source.

It was discovered that ntpd as a client did not correctly check the
originate timestamp in received packets. A remote attacker could use this
flaw to send a crafted packet to an ntpd client that would effectively
disable synchronization with the server, or push arbitrary offset/delay
measurements to modify the time on the client. (CVE-2015-8138)

All ntp users are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing the
update, the ntpd daemon will restart automatically.

OSVersionArchitecturePackageVersionFilename
RedHat7x86_64ntp-debuginfo< 4.2.6p5-22.el7_2.1ntp-debuginfo-4.2.6p5-22.el7_2.1.x86_64.rpm
RedHat6x86_64ntpdate< 4.2.6p5-5.el6_7.4ntpdate-4.2.6p5-5.el6_7.4.x86_64.rpm
RedHat6x86_64ntp-perl< 4.2.6p5-5.el6_7.4ntp-perl-4.2.6p5-5.el6_7.4.x86_64.rpm
RedHat6noarchntp-doc< 4.2.6p5-5.el6_7.4ntp-doc-4.2.6p5-5.el6_7.4.noarch.rpm
RedHat6s390xntp-debuginfo< 4.2.6p5-5.el6_7.4ntp-debuginfo-4.2.6p5-5.el6_7.4.s390x.rpm
RedHat6i686ntp< 4.2.6p5-5.el6_7.4ntp-4.2.6p5-5.el6_7.4.i686.rpm
RedHat6s390xntpdate< 4.2.6p5-5.el6_7.4ntpdate-4.2.6p5-5.el6_7.4.s390x.rpm
RedHat6i686ntp-debuginfo< 4.2.6p5-5.el6_7.4ntp-debuginfo-4.2.6p5-5.el6_7.4.i686.rpm
RedHat7s390xsntp< 4.2.6p5-22.el7_2.1sntp-4.2.6p5-22.el7_2.1.s390x.rpm
RedHat7ppc64ntp-debuginfo< 4.2.6p5-22.el7_2.1ntp-debuginfo-4.2.6p5-22.el7_2.1.ppc64.rpm
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5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

68.5%

JSON
Related for RHSA-2016:0063
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