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amazonAmazonALAS-2017-781
HistoryJan 04, 2017 - 5:00 p.m.

Medium: ntp

2017-01-0417:00:00
alas.aws.amazon.com
23

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

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.051 Low

EPSS

Percentile

92.8%

Issue Overview:

The following security-related issues were resolved:

CVE-2016-7426: Client rate limiting and server responses
CVE-2016-7429: Attack on interface selection
CVE-2016-7433: Broken initial sync calculations regression
CVE-2016-9310: Mode 6 unauthenticated trap information disclosure and DDoS vector
CVE-2016-9311: Null pointer dereference when trap service is enabled

Affected Packages:

ntp

Issue Correction:
Run yum update ntp to update your system.

New Packages:

i686:  
    ntpdate-4.2.6p5-43.33.amzn1.i686  
    ntp-4.2.6p5-43.33.amzn1.i686  
    ntp-debuginfo-4.2.6p5-43.33.amzn1.i686  
  
noarch:  
    ntp-perl-4.2.6p5-43.33.amzn1.noarch  
    ntp-doc-4.2.6p5-43.33.amzn1.noarch  
  
src:  
    ntp-4.2.6p5-43.33.amzn1.src  
  
x86_64:  
    ntp-4.2.6p5-43.33.amzn1.x86_64  
    ntp-debuginfo-4.2.6p5-43.33.amzn1.x86_64  
    ntpdate-4.2.6p5-43.33.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-7426, CVE-2016-7429, CVE-2016-7433, CVE-2016-9310, CVE-2016-9311

Mitre: CVE-2016-7426, CVE-2016-7429, CVE-2016-7433, CVE-2016-9310, CVE-2016-9311

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

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.051 Low

EPSS

Percentile

92.8%