CVE-2017-6455: Code Injection

Published Mar 27, 2017
·
Updated

NTP before 4.2.8p10 and 4.3.x before 4.3.94, when using PPSAPI, allows local users to gain privileges via a DLL in the PPSAPIDLLS environment variable.

Other sources

ntp. Multiple issues were addressed by updating to version 4.2.8p10

Credit

Cure53, Cure53, Cure53, Cure53, Cure53, Cure53, Cure53, Cure53, Cure53, Matthew Van Gundy(Cisco)

Affected Software

96 affected componentsFixes available
Apple macOS High Sierra<10.13
10.13
NTP ntp=4.2.8-p9
NTP ntp=4.3.0
NTP ntp=4.3.1
NTP ntp=4.3.2
NTP ntp=4.3.3
NTP ntp=4.3.4
NTP ntp=4.3.5
NTP ntp=4.3.6
NTP ntp=4.3.7
NTP ntp=4.3.8
NTP ntp=4.3.9
NTP ntp=4.3.10
NTP ntp=4.3.11
NTP ntp=4.3.12
NTP ntp=4.3.13
NTP ntp=4.3.14
NTP ntp=4.3.15
NTP ntp=4.3.16
NTP ntp=4.3.17
NTP ntp=4.3.18
NTP ntp=4.3.19
NTP ntp=4.3.20
NTP ntp=4.3.21
NTP ntp=4.3.22
NTP ntp=4.3.23
NTP ntp=4.3.24
NTP ntp=4.3.25
NTP ntp=4.3.26
NTP ntp=4.3.27
NTP ntp=4.3.28
NTP ntp=4.3.29
NTP ntp=4.3.30
NTP ntp=4.3.31
NTP ntp=4.3.32
NTP ntp=4.3.33
NTP ntp=4.3.34
NTP ntp=4.3.35
NTP ntp=4.3.36
NTP ntp=4.3.37
NTP ntp=4.3.38
NTP ntp=4.3.39
NTP ntp=4.3.40
NTP ntp=4.3.41
NTP ntp=4.3.42
NTP ntp=4.3.43
NTP ntp=4.3.44
NTP ntp=4.3.45
NTP ntp=4.3.46
NTP ntp=4.3.47
NTP ntp=4.3.48
NTP ntp=4.3.49
NTP ntp=4.3.50
NTP ntp=4.3.51
NTP ntp=4.3.52
NTP ntp=4.3.53
NTP ntp=4.3.54
NTP ntp=4.3.55
NTP ntp=4.3.56
NTP ntp=4.3.57
NTP ntp=4.3.58
NTP ntp=4.3.59
NTP ntp=4.3.60
NTP ntp=4.3.61
NTP ntp=4.3.62
NTP ntp=4.3.63
NTP ntp=4.3.64
NTP ntp=4.3.65
NTP ntp=4.3.66
NTP ntp=4.3.67
NTP ntp=4.3.68
NTP ntp=4.3.69
NTP ntp=4.3.70
NTP ntp=4.3.71
NTP ntp=4.3.72
NTP ntp=4.3.73
NTP ntp=4.3.74
NTP ntp=4.3.75
NTP ntp=4.3.76
NTP ntp=4.3.77
NTP ntp=4.3.78
NTP ntp=4.3.79
NTP ntp=4.3.80
NTP ntp=4.3.81
NTP ntp=4.3.82
NTP ntp=4.3.83
NTP ntp=4.3.84
NTP ntp=4.3.85
NTP ntp=4.3.86
NTP ntp=4.3.87
NTP ntp=4.3.88
NTP ntp=4.3.89
NTP ntp=4.3.90
NTP ntp=4.3.91
NTP ntp=4.3.92
NTP ntp=4.3.93

Remediation

Patch Available

http://support.ntp.org/bin/view/Main/NtpBug3384

Event History

Mar 27, 2017
CVE Published
via MITRE·05:00 PM
Data Sourced
via MITRE·05:00 PM
Description

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2017-6455?

CVE-2017-6455 is rated as important, allowing local users to gain privileges via DLL manipulation.

2

How do I fix CVE-2017-6455?

Fix CVE-2017-6455 by upgrading to NTP version 4.2.8p10 or later.

3

What versions of NTP are affected by CVE-2017-6455?

CVE-2017-6455 affects NTP versions before 4.2.8p10 and all 4.3.x versions prior to 4.3.94.

4

Who is impacted by CVE-2017-6455?

Local users on systems using vulnerable versions of NTP are impacted by CVE-2017-6455.

5

What is the nature of the vulnerability in CVE-2017-6455?

CVE-2017-6455 allows local users to gain elevated privileges through manipulation of the PPSAPI_DLLS environment variable.

Company

Resources

Contact

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