medium
6.5
CWE
20
Advisory Published
Updated

CVE-2015-7702: Input Validation

First published: Mon Aug 07 2017(Updated: )

The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
NTP ntp>=4.2.0<4.2.8
NTP ntp>=4.3.0<4.3.77
NTP ntp=4.2.8
NTP ntp=4.2.8-p1
NTP ntp=4.2.8-p1-beta1
NTP ntp=4.2.8-p1-beta2
NTP ntp=4.2.8-p1-beta3
NTP ntp=4.2.8-p1-beta4
NTP ntp=4.2.8-p1-beta5
NTP ntp=4.2.8-p1-rc1
NTP ntp=4.2.8-p1-rc2
NTP ntp=4.2.8-p2
NTP ntp=4.2.8-p2-rc1
NTP ntp=4.2.8-p2-rc2
NTP ntp=4.2.8-p2-rc3
NTP ntp=4.2.8-p3
NTP ntp=4.2.8-p3-rc1
NTP ntp=4.2.8-p3-rc2
NTP ntp=4.2.8-p3-rc3
Oracle Linux=6
Debian=7.0
Debian=8.0
Debian=9.0
NetApp OnCommand Performance Manager
NetApp OnCommand Unified Manager
IBM Data ONTAP
IBM Data ONTAP
redhat enterprise Linux desktop=6.0
redhat enterprise Linux desktop=7.0
redhat enterprise Linux server=6.0
redhat enterprise Linux server=7.0
redhat enterprise Linux server aus=7.3
redhat enterprise Linux server aus=7.4
redhat enterprise Linux server aus=7.6
redhat enterprise Linux server aus=7.7
redhat enterprise Linux server eus=7.3
redhat enterprise Linux server eus=7.4
redhat enterprise Linux server eus=7.5
redhat enterprise Linux server eus=7.6
redhat enterprise Linux server eus=7.7
redhat enterprise Linux server tus=7.3
redhat enterprise Linux server tus=7.6
redhat enterprise Linux server tus=7.7
redhat enterprise Linux workstation=6.0
redhat enterprise Linux workstation=7.0

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Reference Links

Frequently Asked Questions

  • What versions are affected by CVE-2015-7702?

    CVE-2015-7702 affects NTP versions 4.2.x before 4.2.8p4 and 4.3.x before 4.3.77.

  • What type of attack is associated with CVE-2015-7702?

    CVE-2015-7702 allows remote attackers to cause a denial of service through the crypto_xmit function.

  • How can I mitigate the effects of CVE-2015-7702?

    To mitigate CVE-2015-7702, you should upgrade to NTP version 4.2.8p4 or 4.3.77 or later.

  • What is the impact of CVE-2015-7702 on server availability?

    CVE-2015-7702 can lead to server crashes, resulting in loss of availability for NTP services.

  • Is CVE-2015-7702 related to any previous vulnerabilities?

    Yes, CVE-2015-7702 is related to an incomplete fix for CVE-2014-9750.

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