medium
6.5
CWE
20
Advisory Published
CVE Published
Updated

CVE-2015-7855: Input Validation

First published: Thu Oct 22 2015(Updated: )

It was found that NTP's decodenetnum() would abort with an assertion failure when processing a mode 6 or mode 7 packet containing an unusually long data value where a network address was expected. This could allow an authenticated attacker to crash ntpd. External References: <a href="https://github.com/ntp-project/ntp/blob/stable/NEWS#L295">https://github.com/ntp-project/ntp/blob/stable/NEWS#L295</a> <a href="http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner">http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/ntp<4.2.8
4.2.8
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
Debian Debian Linux=7.0
Debian Debian Linux=8.0
Debian Debian Linux=9.0
NetApp OnCommand Balance
Netapp Oncommand Performance Manager
Netapp Oncommand Unified Manager Clustered Data Ontap
NetApp Clustered Data ONTAP
Netapp Data Ontap 7-mode
Siemens Tim 4r-ie Firmware
Siemens Tim 4r-ie
Siemens Tim 4r-ie Dnp3 Firmware
Siemens Tim 4r-ie Dnp3
Siemens TIM 4R-IE (incl. SIPLUS NET variants)
Siemens TIM 4R-IE DNP3 (incl. SIPLUS NET variants)

Remedy

http://support.ntp.org/bin/view/Main/NtpBug2922

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