Home CVE Database CVE-2016-7429

CVE-2016-7429

Description

When ntpd receives a server response on a socket that corresponds to a different interface than was used for the request, the peer structure is updated to use the interface for new requests. If ntpd is running on a host with multiple interfaces in separate networks and the operating system doesn\'t check source address in received packets (e.g. rp_filter on Linux is set to 0), an attacker that knows the address of the source can send a packet with spoofed source address which will cause ntpd to select wrong interface for the source and prevent it from sending new requests until the list of interfaces is refreshed, which happens on routing changes or every 5 minutes by default. If the attack is repeated often enough (once per second), ntpd will not be able to synchronize with the source.

Priority: MEDIUM
CVSS v3: 3.7
Publish Date: Nov 10, 2016
Related ID: --
CVSS v2: Low
Modified Date: Nov 10, 2016

Find out more about CVE-2016-7429 from the MITRE-CVE dictionary and NIST NVD


Products Affected

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Product Name Status Defect Fixed Downloads
Linux
Wind River Linux LTS 17 Not Vulnerable -- -- --
Wind River Linux 9 Not Vulnerable -- -- --
Wind River Linux 8 Fixed LIN8-5163
8.0.0.12 Wind River Linux 8.0.0.12
Wind River Linux 8.0.0.13
Wind River Linux 8.0.0.14
Wind River Linux 8.0.0.15
Wind River Linux 8.0.0.16
Wind River Linux 8.0.0.17
Wind River Linux 8.0.0.18
Wind River Linux 8.0.0.19
Wind River Linux 8.0.0.20
Wind River Linux 8.0.0.21
Wind River Linux 8.0.0.22
Wind River Linux 8.0.0.23
Wind River Linux 8.0.0.24
Wind River Linux 8.0.0.25
Wind River Linux 8.0.0.26
Wind River Linux 8.0.0.27
Wind River Linux 8.0.0.28
Wind River Linux 8.0.0.29
Wind River Linux 8.0.0.30
Wind River Linux 8.0.0.31
Wind River Linux 8.0.0.32
Wind River Linux 8.0.0.33
Wind River Linux LTS 18 Not Vulnerable -- -- --
Wind River Linux LTS 19 Not Vulnerable -- -- --
Wind River Linux CD release Not Vulnerable -- -- --
VxWorks
VxWorks 7 Fixed -- ipnet_ntp-1.2.0.4 --
VxWorks 6.9 Fixed -- 6.9.4.10 --

Related Products

Product Name Status Defect Fixed Downloads
Linux 7 SCP Not Vulnerable -- -- --
Linux 7 CGP Not Vulnerable -- -- --

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