medium
6.2
CWE
119
Advisory Published
Updated

CVE-2015-7975: Buffer Overflow

First published: Mon Jan 30 2017(Updated: )

The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).

Credit: cve@mitre.org

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

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-7975?

    CVE-2015-7975 is classified as a denial of service vulnerability that can cause an application crash.

  • Which versions of NTP are affected by CVE-2015-7975?

    CVE-2015-7975 affects NTP versions prior to 4.2.8p6 and 4.3.x before 4.3.90.

  • How do I fix CVE-2015-7975?

    To fix CVE-2015-7975, upgrade NTP to version 4.2.8p6 or 4.3.90 or later.

  • What are the risks associated with CVE-2015-7975?

    Exploitation of CVE-2015-7975 can lead to denial of service, affecting the availability of time synchronization services.

  • Is CVE-2015-7975 a common vulnerability?

    While CVE-2015-7975 is specific to certain versions of NTP, similar vulnerabilities in network protocols are not uncommon.

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