CVE-2015-7973: Medium severity Siemens TIM 4R-IE (incl. SIPLUS NET variants) vulnerability

Published Jan 30, 2017
·
Updated

NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

Affected Software

87 affected components
Siemens TIM 4R-IE (incl. SIPLUS NET variants)
Siemens TIM 4R-IE DNP3 (incl. SIPLUS NET variants)
NTP ntp<4.2.8
NTP ntp>=4.3.0<4.3.90
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
NTP ntp=4.2.8-p4
NTP ntp=4.2.8-p5
Siemens Tim 4r-ie Firmware
Siemens Tim 4r-ie
Siemens Tim 4r-ie Dnp3 Firmware
Siemens Tim 4r-ie Dnp3
FreeBSD FreeBSD>=10.0<10.1
FreeBSD FreeBSD=9.3
FreeBSD FreeBSD=9.3-p1
FreeBSD FreeBSD=9.3-p10
FreeBSD FreeBSD=9.3-p12
FreeBSD FreeBSD=9.3-p13
FreeBSD FreeBSD=9.3-p16
FreeBSD FreeBSD=9.3-p19
FreeBSD FreeBSD=9.3-p2
FreeBSD FreeBSD=9.3-p20
FreeBSD FreeBSD=9.3-p21
FreeBSD FreeBSD=9.3-p22
FreeBSD FreeBSD=9.3-p23
FreeBSD FreeBSD=9.3-p24
FreeBSD FreeBSD=9.3-p25
FreeBSD FreeBSD=9.3-p3
FreeBSD FreeBSD=9.3-p5
FreeBSD FreeBSD=9.3-p6
FreeBSD FreeBSD=9.3-p7
FreeBSD FreeBSD=9.3-p8
FreeBSD FreeBSD=9.3-p9
FreeBSD FreeBSD=10.1
FreeBSD FreeBSD=10.1-p1
FreeBSD FreeBSD=10.1-p10
FreeBSD FreeBSD=10.1-p12
FreeBSD FreeBSD=10.1-p15
FreeBSD FreeBSD=10.1-p16
FreeBSD FreeBSD=10.1-p17
FreeBSD FreeBSD=10.1-p18
FreeBSD FreeBSD=10.1-p19
FreeBSD FreeBSD=10.1-p2
FreeBSD FreeBSD=10.1-p22
FreeBSD FreeBSD=10.1-p24
FreeBSD FreeBSD=10.1-p25
FreeBSD FreeBSD=10.1-p26
FreeBSD FreeBSD=10.1-p27
FreeBSD FreeBSD=10.1-p3
FreeBSD FreeBSD=10.1-p4
FreeBSD FreeBSD=10.1-p5
FreeBSD FreeBSD=10.1-p6
FreeBSD FreeBSD=10.1-p7
FreeBSD FreeBSD=10.1-p8
FreeBSD FreeBSD=10.1-p9
FreeBSD FreeBSD=10.2
FreeBSD FreeBSD=10.2-p1
FreeBSD FreeBSD=10.2-p10
FreeBSD FreeBSD=10.2-p2
FreeBSD FreeBSD=10.2-p5
FreeBSD FreeBSD=10.2-p7
FreeBSD FreeBSD=10.2-p8
FreeBSD FreeBSD=10.2-p9
NetApp Clustered Data ONTAP
NetApp OnCommand Balance
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
All of the following
Siemens Tim 4r-ie Firmware
Siemens Tim 4r-ie
All of the following
Siemens Tim 4r-ie Dnp3 Firmware
Siemens Tim 4r-ie Dnp3

Event History

Jan 30, 2017
CVE Published
via MITRE·09:00 PM
Data Sourced
via MITRE·09:00 PM
Description
Data Sourced
via NVD·09:59 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2015-7973?

CVE-2015-7973 is classified as a moderate severity vulnerability due to its potential for man-in-the-middle attacks.

2

How do I fix CVE-2015-7973?

To mitigate CVE-2015-7973, upgrade to NTP version 4.2.8p6 or later, or 4.3.90 or later.

3

What attacks are possible due to CVE-2015-7973?

CVE-2015-7973 enables attackers to conduct replay attacks by sniffing network traffic in broadcast mode configurations.

4

Which systems are affected by CVE-2015-7973?

CVE-2015-7973 affects NTP versions prior to 4.2.8p6 and 4.3.x versions prior to 4.3.90.

5

Is there a workaround for CVE-2015-7973?

A viable workaround for CVE-2015-7973 is to disable broadcast mode in NTP configuration.

Contact

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